This metal framing profile detail shows a single rabbet mullion assembly configured for glass-to-glass glazing with an internal lead lining. The main frame measures four inches in depth with an overall throat opening width determined by the throat opening plus one inch, featuring equal spacing dimensions on either side. A removable stop is positioned within the profile alongside specific dimensional clearances of one and one-quarter inches, five-eighths of an inch, and two inches. The adjacent section profile indicates a throat opening with half-inch and one and fifteen-sixteenth-inch dimensional constraints as required.
(LEAD LINING) MULLION (GLASS TO GLASS) W6 W7 4" 5/8" 1 1/4" 1 1/4" 1 15/16" 5/8" 2" 1/2" 1/2" THROAT OPENING REMOVABLE STOP AS REQD EQ EQ THROAT OPENING + 1"
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