5 TIPS ABOUT RUBBER INSULATION YOU CAN USE TODAY

Joints of duct units shall be made considerably airtight by means of tapes, mastics, liquid sealants, gasketing or other accredited closure systems. Closure programs employed with rigid fibrous glass ducts shall comply with UL181A and shall be marked181A-P for pressure-sensitive tape, 181A-M for mastic or 181 A-H for heat-sensitive tape. Closure me