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Item: 183300

Sheetrock® Brand Gypsum Base Imperial®, Firecode® C

1/2 in. Type C rigid base for fire-rated veneer plaster systems

Available Product Options

Thickness: 1/2 inch

Width: 48 inch

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A large size, rigid base for fire-rated gypsum veneer plaster systems.Sheetrock® Brand Gypsum Base Imperial®, Firecode® C panels are designed for direct or resilient attachments to wood and steel framing.

Main Features

Sheetrock® Brand Gypsum Base Imperial®, Firecode® C combines the advantages of regular Sheetrock® Brand Gypsum Base Imperial® with additional resistance to fire when used as a component in a fire-related assembly. Sheetrock® Brand Gypsum Base Imperial®, Firecode® C, is 1/2 inch thick and provides Type C fire-resistance performance.

  • Large enough to be installed like drywall
  • Rigid base for the economical application of veneer plasters
  • Distinctive blue face paper specifically designed for veneer plaster applications
  • 4-feet wide and 1/2-inch thick — available in lengths from 8- to 14-feet
  • UL-Classified (Type IP-X2) for use in UL fire-resistant system


Submittal Sheet PDF 716.9 KB


  • Mold & Mildew Resistance
    Contains a broad-spectrum antimicrobial additive on the face and back of the panel that provides resistance against the growth of mold and mildew. Includes sag-resistance performance.
  • Fire Resistance
    • Fire Rating Firecode®
  • ASTM Classification ASTM C1396


  • GREENGUARD Certification
    GREENGUARD Certification helps consumers choose building materials with lower VOC (volatile organic compound) emissions, which improves indoor air quality.

Physical Data

  • Thickness (in.) 1/2
  • Edge Tapered Edge
  • Panel Size 48" x 8-12'

Documents & Files

Submittal Sheets & Specifications

Submittal Sheet (English) PDF 716.9 KB

White Papers

Sell Sheet (English) PDF 2.7 MB

Catalogs & Brochures

System Catalog (English) PDF 4.9 MB

Installation & Technical Manuals

Installation Guide (English) PDF 55.9 KB

SDS, Certifications & Reports

SDS (English) PDF 160.1 KB
SDS (Spanish) PDF 167.2 KB

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