Metacaulk Box Guard Double
Brand: Metacaulk
SKU: 66367
Case Qty: 50
Item UOM: Case
Color: Black
Metacaulk BoxGuard Double is a ready-to-install fire-rated insert for metallic double-gang electrical boxes. A factory pre-cut opening eliminates on-site drilling or cutting, while peel-and-stick backing helps it stay in place. Highly intumescent and non-conductive. Size: 3-3/4" x 3-11/16" x 1/4" (94 x 95 x 6 mm).
FAST INSTALL: Factory pre-cut opening eliminates on-site drilling, measuring, and cutting.
FIRESTOP PROTECTION: Highly intumescent material expands under fire to help block flame spread and limit heat transfer.
PEEL & STICK: Adhesive backing secures the insert to the inside back wall of the metallic electrical box.
NON-CONDUCTIVE: Designed for safe use around electrical wiring with a dielectric breakdown voltage of 22V/mil.
DOUBLE FIT: Sized at 3-3/4" x 3-11/16" x 1/4" for double-gang electrical boxes.
For use on the inside back panel of metallic electrical boxes in fire-rated wall assemblies. Helps restrict the passage of flames and limit temperature rise on unexposed surfaces while allowing reduced horizontal separation between opposing outlet boxes when installed as directed.
Metallic boxes in fire-rated wall assemblies




