30" x 54" Hatches

The Bilco NB-20 Roof Hatch provides a 30 inch by 54 inch opening designed for ship stair access, offering more clearance than ladder access hatches. Its insulated cover and curb improve energy efficiency, while fully welded corners and an EPDM gasket ensure weather-tight performance. Constructed from heavy-gauge galvanized steel, aluminum, or stainless steel, the NB-20 is built for demanding commercial applications. Compression springs provide easy, one-hand operation, and the automatic...

The Bilco NB-50 Roof Hatch is designed for ship stair access, providing a 30 inch by 54 inch clear opening for safe and convenient rooftop entry. Constructed from heavy-gauge galvanized steel, aluminum, or stainless steel, it is built for strength and durability. Fully insulated cover and curb reduce energy transfer, while the EPDM gasket and fully welded corners maintain a weather-tight seal. The NB-50 includes compression spring operators for one-hand operation and an automatic hold-open arm...

The Bilco NB-50TB is a thermally broken roof hatch sized 30-inch by 54-inch designed for ship stair access. It uses aluminum cover and frame, both insulated with approximately 3-inch (75 mm) polyisocyanurate for R-18 thermal performance. The hatch features an extruded EPDM gasket permanently adhered to the cover, heavy-duty pintle hinges with stainless steel hinge pins, a slam latch with interior/exterior handles and padlock hasps, lift assistance via compression spring operators enclosed in...

The Bilco NB-50VM is a 30-inch by 54-inch aluminum VersaMount roof hatch designed to replace damaged hatches without removing roofing membrane. It has a low-profile curb with built-in flange and apron, an anchor clip system, and a fully insulated cover and curb with EPDM gasket. Lift is assisted by compression springs, and it includes an automatic hold-open arm, slam latch with interior and exterior handles, padlock hasps, and is constructed with welded corners and weather-tight build. Key...

The Bilco NB-20VM is a 30-inch by 54-inch VersaMount roof hatch designed for ship stair access. It is intended for retrofit over an existing curb, eliminating the need to remove roofing membrane. The hatch uses galvanized steel construction with a low-profile curb, built-in apron, anchor clip system, 1″ (25 mm) concealed fiberglass insulation in cover and curb, overlapping flange, fully welded corners, EPDM gasket, compression spring operators, slam latch with interior/exterior handles, and a...