Canfab unit hold down brackets are fabricated from nine-inch wide twelve-gauge steel and secured to the new transition adapter curb and roof curb using eight number twelve by one-inch self-drilling Tek screws. The bracket layout accommodates insulated panels with rigid insulation and roofing around the supply and return openings. The specified number of hold down brackets are spaced around the perimeter as shown on the drawing.
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. (N) UNIT HOLD DOWN BRACKET
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