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Fire-Rated Shaftwall Liner Panel Count Calculator

Calculate how many shaftwall liner panels are needed to fill the stud cavities of a shaft wall assembly.

Computed in your browser — nothing you enter is uploaded. Figures are presented in United States units and terminology, and each formula’s basis is cited under regulatory standards below.

Last verified 2026-08-26 · v1.0.0

Market
Imperial · sales tax
33 ft2 ft
Schematic, drawn to the proportions you entered — not to scale on screen.

Liner panels needed

17 panels

High confidence

With the figures above, the liner panels needed comes to 17. This is presented for United States. Building in another market? Change the selector above and the units and terminology follow.

Estimated cost — your price

This site holds no price list for this material — local prices vary too much to publish honestly. Enter your supplier's price and the result is costed with it.

Preliminary estimate, not certified engineering. This tool produces an indicative quantity calculation for planning purposes only — it is not a certified structural analysis, a guaranteed material takeoff, or a substitute for building department approval. Always verify measurements on-site and have a licensed contractor or structural engineer review any load-bearing, code-sensitive, or safety-critical work before purchasing materials or starting construction. Spotted an arithmetic or standards error? Report it to contact@craftquantities.com with your inputs — a confirmed fix gets a permanent check of its own, so the same mistake cannot come back.

Presented in US customary units and US trade terminology. Where a formula follows a published standard, that standard and its edition are cited beside it on this page; where none governs, the page says so. Local amendments override model codes — verify against the code in force where you build.

Regulatory standards & verification citations

  • Liner panel count = ceil(wall length ÷ liner panel width) — shaftwall liner panels are commonly 1 in thick and 24 in wide, friction-fit between the shaftwall studs

Your workspace

Most jobs need more than one number. Add the calculators you need next and they open right here, underneath this one — your figures stay on screen and nothing is lost to a page change.

Frequently asked questions

Why are liner panels sized by wall length, not area?
Shaftwall liner panels stand vertically, friction-fit between adjacent CH studs to span the full height of the wall in one piece — so the quantity needed depends on how many panel widths fit along the wall's length, not the wall's total area.
How wide and thick is a standard shaftwall liner panel?
Shaftwall liner panels are commonly 1 in thick and 24 in (about 0.61 m) wide, but always confirm the exact width from your specific manufacturer's product data before finalizing a takeoff.
Does this account for door or louver openings in the shaft wall?
No — this calculates the base liner panel count for a continuous wall length only. Openings for doors, louvers, or access panels should be deducted from your layout separately.