Bilco® F-40 Roof Hatch w/ Aluminum Cover and Galvanized Curb - 48"x48" please try to align all

please try to align all the holes

Part #: 072743001309

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Bilco® F-40 Roof Hatch w/ Aluminum Cover and Galvanized Curb - 48"x48" please try to align allBilco F 40 Roof Hatch w Aluminum Cover and Galvanized Curb 48"x48" Model #: WBB692238 MPN #: F 40 Engineered with compression spring operators to provide smooth, easy, one hand operation. Automatic hold open arm locks the cover in the open position to ensure safe egress. Overlapping cover design, full welded corners on cover and curb, EPDM rubber gasket, and fully insulated cover and curb ensure weathertightness and energy efficiency. Constructed with