SheetRock ClimaPlus lay-in ceiling panels with Firecode formulation are face-laminated gypsum panels that resist sagging. They have a gypsum core and feature superior fire protection, extraordinary dimensional stability, and good CAC values. With their adherence to strict federal standards and USDA/FSIS requirements, the panels are perfect for exterior soffits, parking garages, kitchens, food preparation areas, restrooms, utility areas, locker rooms, and marine environments. The panels offer a ClimaPlus 30-year system warranty to withstand temperature and humidity conditions up to 104 deg. F. (40 deg. C.)/95% relative humidity without visible sag when used with USG DONN suspension systems. Their Firecode formulation contains special additives that increase fire resistance and may qualify for use in fire rated assemblies to help meet life safety codes. Inexpensive solution for interior or exterior applications. Size: 2 Ft. x 4 Ft. x 1/2 In. Square edge. Smooth texture. Vinyl faced. 4 pieces or 32 Sq. Ft. bundled together by banding.