A Canfab unit hold down bracket fabricated from nine-inch wide twelve gauge steel is secured to the new transition adapter curb using eight number twelve by one inch Tek screws on one flange and four number twelve by one inch Tek screws on the opposing face. The assembly interfaces with insulated supply and return panels over rigid insulation and roofing. The hold-down brackets are provided in the number and spacing shown on plan.
RETURN SUPPLY INSULATED PANELS. SECURE HOLD DOWN TO ROOF CURB WITH (8) #12 x 1" TEK SCREWS, TYP. ROOFING. "CANFAB" UNIT HOLD DOWNS FABRICATED FROM 9" WIDE 12 GAUGE STEEL. PROVIDE NUMBER OF HOLD DOWN BRACKETS AS SHOWN. 7.75" (TYP.) RIGID INSULATION. SECURE HOLD DOWN TO (N) TRANSITION ADAPTER CURB WITH (8) #12 x 1" TEK SCREWS, TYPICAL. 9" 12 GA. STEEL. SECURE HOLD DOWN TO (N) TRANSITION ADAPTER CURB WITH (4) #12 x 1" TEK SCREWS, TYPICAL. UNIT HOLD DOWN BRACKET
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