An AR450 series aluminum storefront head profile is secured to the rough opening with quarter-twenty Dril-Flex fasteners spaced at eighteen inches on center within three-inch slotted holes, positioned four inches from each end. The storefront framing coordinates with eight-inch cold-formed metal studs faced with five-eighths-inch gypsum board. Dimensions establish the rough opening, frame dimension, and daylight opening tolerances.
HCF326 HC420 G5 G6 2" D.L.O. FRAME DIMENSION ROUGH OPENING 5 16 " 3 8 " 01 02 7 16 " 1 2 " MULLION LENGTH #1/4-20 DRIL-FLEX @ (1) 4" FROM EA. END AND SPACED @ 18" O.C. (ICC-ESR 3332) IN 3" SLOTTED HOLES 01 Arch Ref: SYSTEM: HEAD DETAIL 1 13/A11.61 AR450 SERIES R.O. (8'-0") 15 16 " 8" METAL STUDS 5 8 " GYPSUM BOARD
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