Last updated: May 2026 | Data sourced from manufacturer specifications and Custom Cones USA 2026 Market Report.
Understanding pre-roll sizes is the foundation of every commercial production line decision you make. Choose the wrong cone size and you will feel it in three ways: a consumer who finishes in two minutes when they wanted ten, a retail buyer who passes on reorder, and a production line that runs slower than it should because the format does not match the machine. This guide covers every standard commercial pre-roll cone size, the technical specifications that matter for production, how flower density affects fill weight, which paper types perform best at scale, and which STM machines are optimized for each format.
This is written for commercial cannabis operators, not consumers. Pre-roll sizes affect throughput, packaging costs, compliance weight tolerances, and retail velocity. If you are building or optimizing a pre-roll production line, this is the reference you need.
Pre-Roll Cone Sizes: Quick Reference Chart 2026
| Size | Common Name | Fill Weight | Opening Diameter | Filter Length | Burn Time | Best For | STM Compatible Machines |
|---|---|---|---|---|---|---|---|
| 70mm | Dogwalker / Mini | 0.25 - 0.5g | 10.2mm | 21-26mm | 5-10 min | Solo quick session, multi-packs | Mini RocketBox+ |
| 84mm | 1¼ Classic | 0.5 - 0.65g | 10.8mm | 26mm | 10-15 min | Daily personal use, highest velocity SKU | Mini RocketBox+ RocketBox 2.0 RocketBox Pro |
| 98mm | 98 Special | 0.5 - 0.75g | 11.8mm | 20-30mm | 15-20 min | Mid-tier premium SKU, two-person sessions | Mini RocketBox+ RocketBox 2.0 RocketBox Pro |
| 109mm | King Size | 0.75 - 1.6g | 12.5mm | 26mm | 20-30 min | Flagship SKU, group sessions, MSO anchor format | Mini RocketBox+ RocketBox 2.0 RocketBox Pro |
| 109mm+ | Oversized / Infused King | 1.0 - 2.0g+ | 13mm+ | 26-35mm | 25-40 min | Infused pre-rolls, hashhole, premium tier | RocketBox Pro Astro Infuser |
Fill weights vary based on flower density and grind consistency. All STM machines support standard sizes. The 109mm+ oversized format is designed for homogenized infused material.
The Variable Nobody Talks About: Flower Density and Fill Weight
Two identical 98mm cones, filled to the same visual level, can hold 0.6g of one strain and 0.9g of another. This is not a machine error. It is flower density, and understanding it is the most important technical concept for commercial pre-roll production.
What density actually means for your production line
The tobacco industry calls this "filling power" - the measure of how much volume a given weight of material occupies. Fluffy, airy cannabis has high filling power, meaning it takes up more space per gram. Dense, compact flower has low filling power and packs more weight into the same volume. Two producers running the same machine with the same cone will get different output weights if their material density differs.
This matters for three reasons specific to commercial automation:
- Compliance weight tolerances. Most states require pre-rolls to be within a defined weight variance of the labeled gram weight. If your material density shifts between harvests or suppliers, your fill weights shift too, potentially putting product out of compliance.
- Machine calibration. STM machines calibrate fill by weight, not by volume. The LaunchPad Scale weighs 72 joints simultaneously and flags any out-of-spec fill immediately. This is why weight verification in the One-Tray Workflow is a production efficiency tool, not just a compliance tool.
- Grind consistency amplifies density variance. A medium-coarse grind minimizes the impact of density variation across strains. Too fine and you amplify density differences. Too coarse and fill becomes uneven regardless of density. The Revolution 2.0 Grinder is calibrated for consistent particle size output specifically to stabilize fill weight across strain changes.
Why Grind Size Is One of the Most Important Variables in Pre-Roll Quality
Flower density and cone size determine what you can fill. Grind size determines whether the finished pre-roll is actually smokeable. It is one of the most overlooked variables in commercial pre-roll production and one of the most consequential for consumer experience and brand reputation.
The 4-5mm grind standard and why it matters
A 4 to 5mm particle grind - the output of a properly calibrated commercial cannabis grinder like the Revolution 2.0 - produces a finished pre-roll with three critical characteristics: consistent airflow from tip to filter, an even burn that does not canoe, and a draw resistance that consumers can comfortably pull on. This is the grind standard that professional pre-roll operators build their production around.
At 4 to 5mm, the ground flower maintains enough structure to allow air to move through the pre-roll evenly. The material fills the cone consistently without compacting into pockets of density that cause uneven burning. The finished joint pulls easily and burns end-to-end without the channeling or canoeing that drives consumer complaints and return visits to the dispensary counter.
What happens when grind is too fine
A grind that is too fine - below 2 to 3mm and trending toward powder - creates several problems that directly affect consumer experience and production compliance:
- Draw resistance becomes too high. Powdery, over-ground material packs more densely and leaves less airspace between particles. The result is a pre-roll that is difficult or impossible to pull on comfortably. Consumers interpret this as a defective product regardless of the flower quality inside.
- Burn consistency degrades. Dense, powdery fills burn unevenly, creating hot spots and side burns. A pre-roll that canoes - burns down one side faster than the other - is one of the most common consumer complaints in cannabis retail.
- Weight compliance becomes harder to maintain. Finely ground material shifts and compacts during handling, meaning a pre-roll that passes weight check at the machine may be out of spec by the time it reaches the dispensary shelf.
- Terpene and flavor degradation. Over-grinding increases surface area and accelerates oxidation. Material ground too finely loses terpene potency faster than coarser material, directly impacting the flavor and aroma of the finished product.
Why modular grinding gives you control
A dedicated commercial grinder like the STM Revolution 2.0 is calibrated independently of the filling machine. This means grind size can be set, verified, and adjusted based on the specific strain and its density characteristics - without affecting fill cycle speed or throughput on the filling machine. When grind size and fill speed are controlled by the same integrated system, adjusting one variable forces a change in the other.
The Revolution 2.0 is designed for 4 to 5mm output as its production standard. At this particle size, the material flows freely through the pneumatic fill cycle, packs consistently to weight without over-compression, and produces a finished pre-roll with the draw resistance and burn profile that earns repeat purchases at retail.
This is the operational advantage of the STM One-Tray Workflow: the grinder, filler, scale, closer, and infuser are each independently calibrated for their specific function. Grind quality is not compromised by throughput targets on the filling station. Each station does one thing well.
The Grind Standard for Commercial Pre-Rolls
4-5mm
Target particle size for optimal smokability and burn consistency
Revolution 2.0
STM commercial grinder calibrated to 4-5mm output standard
Station 1
First step in the One-Tray Workflow before filling, weighing, closing, or infusing
Running multiple strains at scale?
STM's team helps you dial in calibration for each format. Free consultation.
Watch It Fill: Mini RocketBox+ Running at Production Speed
The Mini RocketBox+ filling 70mm, 84mm, 98mm, and 109mm cones at commercial volume. One operator. No pre-weighing required.
STM Mini RocketBox+ | Supports 70mm, 84mm, 98mm, 109mm | Up to 10,000/day | Made in USA - Spokane, WA
Every Standard Pre-Roll Cone Size: Full Commercial Specifications
70mm Dogwalker (Mini Pre-Roll)
The 70mm Dogwalker is the smallest standard commercial pre-roll format. The name reflects the format's intended use: a short session just long enough for a quick walk around the block. At 0.25 to 0.5g fill, it is the most accessible price point in any dispensary catalog and the strongest driver of trial purchases from new consumers.
For commercial operators: Dogwalkers sell best in multi-packs. A 5-pack at $12 to $18 retail moves faster than a single at $4 because the perceived value at multi-pack pricing drives impulse purchase decisions at the counter. The 70mm is the most sensitive format to grind consistency of all standard sizes. The narrow 10.2mm opening means overpacking creates significant draw resistance and underpacking produces a loose, uneven burn. Grind particle size must be dialed in before scaling this format.
Automation note: The 70mm requires additional calibration tuning compared to the 84mm, 98mm, and 109mm. The narrower body amplifies any inconsistency in material prep. STM's customer success team dials this in per operation before handoff.
Compatible STM Machines
Mini RocketBox+84mm Classic (1¼ Pre-Roll)
The 84mm is the highest-velocity SKU in commercial cannabis retail. It is the most produced pre-roll cone size in the U.S. market and the format most dispensaries rely on for consistent reorder volume. At 0.5 to 0.65g fill, it sits at the right price-to-quantity ratio for daily personal use and generates the fastest turnover of any standard format.
For commercial operators: If you are launching your first pre-roll SKU, start with the 84mm. It has the broadest consumer base, the most reliable retail velocity, and the easiest path to automation. The 10.8mm opening is the most forgiving of the four standard sizes for fill consistency across different material densities.
Automation note: The 84mm is optimized out of the box on all RocketBox machines. No additional tuning required for standard flower material. Consistent fill distribution from first cycle.
Ready to automate your 84mm or 98mm line?
The RocketBox 2.0 fills up to 20,000 per day at $24,950. Made in USA.
98mm Special (98 Pre-Roll)
The 98mm sits between the 84mm classic and the 109mm king size and has been quietly gaining ground in commercial pre-roll catalogs over the past two years. It is a step up for consumers who find the 84mm slightly short but are not ready to commit to a full gram at retail pricing.
For commercial operators: The 98mm creates a distinct mid-tier SKU without requiring different packaging in most cases. It performs well positioned as "premium everyday" - above the standard half-gram but below the king size price point. This format is particularly effective for brands targeting moderate consumers or two-person sessions at social price points.
Automation note: The 98mm and 109mm are the two sizes where commercial automation delivers the most consistent output. The 11.8mm opening provides reliable fill distribution across a wide range of material densities with no additional calibration required.
109mm King Size (1g Pre-Roll)
The 109mm king size is the commercial pre-roll industry's benchmark format and the most produced cone size in the U.S. legal cannabis market. At 12.5mm opening diameter and 1 to 1.6g fill capacity, it is the format most operators anchor their flagship SKU around. At retail it commands the strongest price-to-value perception of any standard format - long enough to feel premium, short enough that consumers do not feel they are committing to a full session.
For commercial operators: If you are running one SKU format at high volume, this is it. The 109mm is the most production-efficient format. The wider cone body gives the most consistent airflow through the fill cycle and all STM machines are optimized for this format out of the box. This is the format where multi-machine configurations and the full One-Tray Workflow deliver the greatest ROI per cycle.
Automation note: At 20,000+ joints per day in the 109mm format, the RocketBox 2.0 is the standard. At 40,000+ per day across multiple strains simultaneously, the RocketBox Pro with its five-station design eliminates retooling between strain changes.
109mm+ Oversized Infused Format
The 109mm+ oversized format is specifically engineered for infused pre-rolls made with homogenized infused material - hashhole, live resin, kief-coated, or blended infusion formats. The wider diameter accommodates the denser, stickier infused material that standard 109mm cones cannot fill consistently at commercial volume.
For commercial operators: Infused pre-rolls represented 44% of the total U.S. pre-roll market in 2026 according to the Custom Cones USA 2026 Market Report - the fastest growing segment in the category. Operators who are not producing infused SKUs are leaving revenue on the table. The 109mm+ format is the entry point for commercial infusion production.
Why homogenized material matters: Hashhole and other whole-infusion formats require precise material consistency to fill at commercial scale without jamming. Homogenized infused material - where the infusion is blended uniformly into the flower rather than inserted as a whole piece - allows the RocketBox Pro to handle infused fills at production volume. The Astro Infuser 2.0 integrates directly into the One-Tray Workflow for post-fill infusion without retooling.
Adding an infused pre-roll line?
Talk to STM about the Astro Infuser 2.0 and the 109mm+ infused format. Free consultation.
Pre-Roll Paper Types: How Material Choice Affects Production
Paper type affects burn rate, flavor, consumer experience, and critically for commercial operators, how consistently the paper holds its shape through an automated fill cycle. Not all papers perform equally at production scale.
| Paper Type | Burn Rate | Flavor Impact | Automation Performance | Best For |
|---|---|---|---|---|
| Wood Pulp | Fast | Slight paper taste | Excellent - stiff, consistent shape | High-volume production, most forgiving format |
| Rice Paper | Slow | Nearly neutral | Good - thinner, requires consistent humidity control | Premium SKUs, terpene-forward strains |
| Hemp Paper | Medium | Slight earthy note | Good - slightly thicker than rice, holds shape well | Brand positioning around natural materials |
| Cellulose | Slow | Completely neutral | Moderate - transparent format more prone to tearing at scale | Novelty / display SKUs, not recommended for high-volume automation |
| Palm Leaf / Blunt Wrap | Slow | Earthy, tobacco-adjacent | Requires specialized equipment - not standard cone format | Blunt-style SKUs, infused blunts |
Cigarette-Style Tube Pre-Rolls
Cigarette-style pre-roll tubes are a distinct format from cone-shaped pre-rolls. They maintain uniform diameter end-to-end rather than tapering from filter to tip. This produces a more consistent fill density throughout the length of the pre-roll and a draw resistance that remains constant from first light to finish.
Tubes are available in 84mm and 109mm lengths with 8.1mm and 9mm diameters respectively. The uniform diameter means they require different filling equipment than tapered cones. Tubes do not run on the same machines as standard cones and should be evaluated as a separate equipment decision. Confirm machine compatibility with your cone supplier before committing to a tube format at commercial scale.
How to Choose the Right Pre-Roll Cone Size for Your Brand
Pre-roll sizes are a business decision before they are a production decision. The format you choose determines your retail positioning, your packaging costs, your machine configuration, and your compliance workflow. Here is the framework for choosing correctly.
Step 1 - Match size to your retail channel
Dispensaries with a younger, price-sensitive consumer base move more 70mm and 84mm product. Dispensaries serving experienced consumers who prioritize quality and session length move more 98mm and 109mm product. If you sell across multiple channels, consider a tiered SKU lineup rather than a single size.
Step 2 - Match size to your positioning
Entry-level and trial positioning: 70mm multi-pack. Daily personal use: 84mm. Premium everyday: 98mm. Flagship or anchor SKU: 109mm. Infused or ultra-premium tier: 109mm+.
Step 3 - Match size to your production volume and machine
At under 5,000 joints per day, the Mini RocketBox+ handles all four standard sizes. At 5,000 to 20,000 per day, the RocketBox 2.0 is optimized for 84mm, 98mm, and 109mm. At 20,000+ per day across multiple formats simultaneously, the RocketBox Pro handles all standard sizes plus the 109mm+ infused format across five stations without retooling.
Step 4 - Consider packaging compatibility
The cone size you choose determines your packaging format. A 109mm king size requires a tube or box that is not interchangeable with 84mm packaging. If you are launching multiple sizes, confirm packaging compatibility before finalizing your SKU lineup to avoid retooling costs downstream.
Not sure which size and machine combination is right for your volume?
STM's team designs production line configurations for your specific daily target and SKU mix. Free.
STM Machine Compatibility by Cone Size and Volume
| Machine | Price | 70mm | 84mm | 98mm | 109mm | 109mm+ | Max Daily Volume |
|---|---|---|---|---|---|---|---|
| RollCraft MRB | $3,500 | ✓ | ✓ | ✓ | ✓ | — | Up to 10,000/day |
| Mini RocketBox+ | $6,600 | ✓ | ✓ | ✓ | ✓ | — | Up to 10,000/day |
| RocketBox 2.0 | $24,950 | — | ✓ | ✓ | ✓ | — | Up to 20,000/day |
| RocketBox Pro | $59,950 | ✓ | ✓ | ✓ | ✓ | ✓ | Up to 40,000+/day |
✓ = supported out of the box. The 70mm format on the RocketBox 2.0 requires additional tooling. The 109mm+ format requires the RocketBox Pro with specialized tray configuration for homogenized infused material. Contact STM for configuration details.
Frequently Asked Questions
What are the standard pre-roll cone sizes?
The four standard commercial pre-roll cone sizes are 70mm (Dogwalker), 84mm (1¼ Classic), 98mm (98 Special), and 109mm (King Size). These four formats represent approximately 90% of pre-roll products sold in U.S. dispensaries. STM Canna machines support all four standard sizes. A fifth format, the 109mm+ oversized cone, is used for infused pre-rolls made with homogenized infused material including hashhole and live resin formats.
How much cannabis does each pre-roll cone size hold?
Fill weights vary by flower density and grind consistency. General commercial ranges: 70mm holds 0.25 to 0.5g, 84mm holds 0.5 to 0.65g, 98mm holds 0.5 to 0.75g, 109mm holds 0.75 to 1.6g, and the 109mm+ infused format holds 1.0 to 2.0g or more. Two identical cones filled with different strains will hold different weights due to flower density variation. This is why commercial pre-roll machines calibrate by weight rather than by volume. Source: STM Canna manufacturer specifications, Spokane WA.
What is the most popular pre-roll size?
The 109mm king size is the most produced pre-roll format in U.S. commercial cannabis production. STM Canna's own production data shows 109mm is the most popular tray size ordered by customers running STM machines, accounting for 70% of all tray orders. The 84mm 1¼ is the highest-velocity retail SKU by unit volume. Most successful multi-SKU catalogs combine both formats - 109mm as the flagship anchor SKU and 84mm driving trial and daily-use volume. STM Canna machines produced over 1 billion pre-rolls across these formats in 44 U.S. states. Source: STM Canna internal production data, Spokane WA.
What cone size is best for infused pre-rolls?
Infused pre-rolls are produced in the 109mm and 109mm+ formats. Standard infusion - kief-coated, oil-dipped, or post-fill liquid infusion using the STM Astro Infuser 2.0 - can be done on standard 109mm cones. Hashhole-style and whole-concentrate infusion formats require the 109mm+ oversized cone with wider diameter to accommodate denser material. Infused pre-rolls represented 44% of the U.S. pre-roll market in 2026 according to the Custom Cones USA 2026 Market Report. Source: Custom Cones USA 2026 Market Report, STM Canna infusion specifications.
How does flower density affect pre-roll fill weight?
Flower density directly affects how much cannabis fits in a given cone volume. Fluffy, airy flower has high filling power and occupies more volume per gram. Dense, compact flower has low filling power and packs more weight per unit of volume. Two identical 98mm cones filled to the same visual level can hold 0.6g of one strain and 0.9g of another depending on density. Commercial pre-roll machines calibrate by weight to account for this. The STM LaunchPad Scale weighs 72 joints simultaneously and flags out-of-spec fills in real time. Source: STM Canna manufacturer specifications, Spokane WA.
Which pre-roll machine supports all cone sizes?
The STM RocketBox Pro at $59,950 supports all standard cone sizes including 70mm, 84mm, 98mm, 109mm, and the 109mm+ oversized infused format across five stations simultaneously without retooling between formats. The STM Mini RocketBox+ at $6,600 supports 70mm, 84mm, 98mm, and 109mm cones up to 10,000 joints per day. The RocketBox 2.0 at $24,950 supports 84mm, 98mm, and 109mm up to 20,000 joints per day. All STM machines are manufactured in Spokane, WA by STM Canna and have produced over 1 billion pre-rolls across 44 U.S. states.
What paper type is best for commercial pre-roll production?
Wood pulp and hemp papers perform most reliably at commercial automation scale due to their structural consistency and resistance to tearing during automated fill cycles. Rice paper burns slower and more neutrally but requires tighter humidity control in the production facility. Cellulose paper is not recommended for high-volume automated production due to higher tear rates. Paper type should be confirmed with your cone supplier before committing to a format at commercial scale.
What is the correct grind size for commercial pre-roll production?
A 4 to 5mm particle grind is the production standard for commercial pre-rolls that smoke consistently and burn evenly. At this particle size, ground flower maintains enough structure to allow airflow through the cone without compacting into a dense, powdery fill. Grind that is too fine - below 2 to 3mm - creates excessive draw resistance, uneven burns, and increased consumer complaints. The STM Revolution 2.0 commercial cannabis grinder is calibrated to 4 to 5mm output as its production standard. Modular grinding systems allow grind size to be set independently of fill speed, which is not possible on all-in-one machines where grind and fill are controlled by the same integrated system. Source: STM Canna production specifications, Spokane WA.
What is STM Canna and which brands use their machines?
STM Canna is a commercial pre-roll equipment manufacturer based at 2701 North Van Marter Road, Spokane Valley WA 99206. STM machines have produced over 1 billion pre-rolls and are used by 50% of the top 20 U.S. pre-roll brands including STIIIZY, Verano, Cresco Labs, Curaleaf, and Cali-Blaze across 44 states and 14+ countries. Customer production examples: Lifted NW in Portland produces 23,000 joints per day on a RocketBox 2.0 and Atomic Closer. CaliBlaze closes over 60,000 joints per day across three states using STM Atomic Closers. Gold Services in Seattle produced 200,000 joints in 10 days on one Mini RocketBox+ and one Atomic Closer.
Ready to Scale Your Pre-Roll Line?
STM Canna machines support every standard cone size from 70mm to 109mm+ at volumes from 3,500 to 40,000+ joints per day. Talk to an expert or watch the machines run live. Free either way.
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Call: 509-204-3164 | support@stmcanna.com | Made in USA - Spokane, WA