Boomerang group proudly manufactures fire-rated cabinets for use in fire-rated assemblies. Underwriters Laboratories, Inc. has classified and listed Boomerang group fire-rated cabinets for combustible and non-combustible wall systems. The cabinets are tested to ASTM E814 or UL1679 results in hourly rating of 2 hour for both flame ("F") and temperature transfer("T"). The fire-rated option eliminates the costly need to line the wall opening with fire-rated material. It also provides the specified assurance in maintaining the integrity of the wall penetration and in meeting building code specifications