UL tested and listed, W-L-7248, for membrane penetrations with code required equal "T" rating
Tested in metal and wood stud construction
Cabinets include: fire extinguisher cabinets and boxes, electrical panel boxes, med-gas mixing valves, utility boxes, wall safes, utility controllers, eye wash stations, etc.
High temperature fire board back with sides of a flexible intumescent mat material that fold inward when inserted, sealing the framed opening
Fits within rough opening dimension guidelines given by most cabinet manufacturers
Red color easily identifiable as a fire resistant product
Patent Pending. Made in the United States of America

Firestopping