5 TIPS ABOUT RUBBER INSULATION YOU CAN USE TODAY

Joints of duct units shall be produced considerably airtight by the use of tapes, mastics, liquid sealants, gasketing or other permitted closure programs. Closure devices applied with rigid fibrous glass ducts shall comply with UL181A and shall be marked181A-P for force-delicate tape, 181A-M for mastic or 181 A-H for warmth-delicate tape. Closure u