5 ESSENTIAL ELEMENTS FOR PLAT GALVANIS

Joints of duct programs shall be created substantially airtight through tapes, mastics, liquid sealants, gasketing or other authorised closure devices. Closure techniques employed with rigid fibrous glass ducts shall comply with UL181A and shall be marked181A-P for tension-delicate tape, 181A-M for mastic or 181 A-H for warmth-delicate tape. Closur