CL4FIRE Single layer system requiring only 3” insulation thickness
CL4FIRE Double Layer system requiring two 1 ½” thick layers for 3” overall insulation thickness

Single or double layer CL4FIRE grease duct systems with butted seams provide additional value and space savings over gypsum shaft installations. CL4FIRE systems are designed and tested to the CAN/ULC-S144 standard to keep internal grease fires from getting out and external fires from getting in. Canadian made and Canadian Tested for increased safety.

Single Layer Grease Duct System

Double Layer Grease Duct System


Product Comparisons

CL4FIRE Fire Protection Gypsum Chase Construction and Wrap - PDF