THE SINGLE BEST STRATEGY TO USE FOR RUBBER INSULATION

Joints of duct devices shall be manufactured significantly airtight via tapes, mastics, liquid sealants, gasketing or other permitted closure systems. Closure techniques utilised with rigid fibrous glass ducts shall adjust to UL181A and shall be marked181A-P for tension-delicate tape, 181A-M for mastic or 181 A-H for heat-delicate tape. Closure dev