Plywood & OSB

1/2" - Interior Fire-Treated CDX Plywood

The 1/2-inch interior fire-treated CDX panel is intended for wall, ceiling, and concealed assemblies that specifically call for this thickness and treatment. Fire performance belongs to the tested assembly, not the panel alone. Verify the required rating, listing, fasteners, and local code before purchase.

LOCAL PICKUP + JOBSITE DELIVERY

In Stock

Choose a verified size or option below and use its SKU when calling or ordering at the counter.

CALL TO CONFIRM

ORDERING INFORMATION

Choose the verified size or option. Use the SKU at the counter.

IN STOCK = ON HAND · QUICK ORDER = USUALLY 1–5 DAYS · CUSTOM ORDER = CONFIRM LEAD TIME

IN STOCK = ON HAND

QUICK ORDER = USUALLY 1–5 DAYS

CUSTOM ORDER = CONFIRM LEAD TIME

SIZE / OPTION

SKU

INVENTORY DESCRIPTION

STATUS

4′ × 8′ · 15/32″ actual

918

4X8-1/2" INT FIRE TREATED

In Stock

PRODUCT SPECIFICATIONS

COMMON SIZE

4′ × 8′ · 15/32″ actual

Additional sizes or options may be available.

MATERIAL

Fire-retardant-treated CDX plywood · Interior Fire Treated

Review the exact material, finish, grade, or treatment.

APPLICATION

Code-specified interior assemblies

Suitable detailing and local code still apply.

AVAILABILITY

In Stock

Stock and lengths change throughout the week.

BEFORE YOU BUILD

A few useful things to know

before this material leaves the yard.

A few useful things to know before this material leaves the yard.

01 / CONFIRM THE SPEC

Match nominal size, actual dimensions, grade, treatment, exposure, and intended use to the plans.

02 / VERIFY COMPATIBILITY

Confirm fasteners, connectors, adhesives, coatings, and local code requirements for the exact product.

03 / PLAN THE ORDER

Bring dimensions, spans, and finish goals when you call.

COMPLETE THE PROJECT

Compatible material, tools, and supplies.

SELECTED BY THE YARD FOR THIS PRODUCT

#6 x 1-5/8 in Black Drywall Screw available from Capital Lumber in Boise, Idaho

#6 x 1-5/8" - Black Drywall Screw

Capital Lumber stocks #6 x 1-5/8" - black drywall screw in its Boise bulk-fastener department. Sold by the pound for construction and repair work. Confirm current bin inventory and suitability for the intended application before purchase.

6392

VIEW

Adhesives & Sealants

Common repair quantities are stocked and ready in the yard. Commonly used for liquid nails, titebond, dap. Polyurethane / Polymer specified for this product line.

YARD-REF-000

VIEW

⅝″ Type X Fire-Rated Board

Used where fire-rated wall or ceiling assemblies are required. Fire-rated Type X formulation for rated assemblies. Individual sheets are stocked for in-store pickup.

953

VIEW

NOT SURE WHAT FITS TOGETHER?

Call a material expert with the product reference in hand.

Tell us what you are building. We can confirm material, fasteners, tools, quantities, pickup, and delivery.

CALL THE YARD →