Williams Brothers Corporation of America Defining Quality One Access Door at a Time

Toll Free: 800-255-5515

Toll Free: 800-255-5515

WB RH Series Roof Hatch

This newly re-designed WB Roof Hatch offers improved features such as a heavier duty lock and handle assembly, heavy gauge, weather-resistant gasket and fully concealed hinge hardware located on the interior making rust unlikely. Pre-lubricated compression springs, encased in zinc-plated telescopic tubes held in place by 3-sided welded brackets. Durable and re-coatable gray primer finish comes standard.

Construction Specifications:

• 14 gauge galvanized steel
• Durable re-coatable gray primer finish
• Highly visible safety caution striping
• Heavy duty lock and handle
• Weather resistant gasket
• Available in aluminum
• Finest quality and workmanship

General: Roof access hatch shall be model WB-RH 30x36 steel manufactured exclusively for The Williams Brothers Corporation of America, with a durable, re-coatable gray primer finish. A yellow and black striped visual warning signal shall be on top of curb and on inside of lid.
Curb Construction: Curb shall be 14 gauge (G 90) galvanized steel with durable re-coatable gray primer finish standard. Curb shall be 12" (304mm) in height with a 4" (101mm) fiber board insulation, and mounting holes for roof attachment. Curb shall have integral cap flashing of the same material and thickness as the curb. Curb and cap flashing shall be fully welded at the corners for a watertight construction. Hinges are two-piece formed steel, with a non-removable heavy-duty pivot pin.
Covers: Cover shall be 14 gauge (G 90) galvanized steel, with radius corners for safety, and shall be fully welded at the corners for watertight construction. The cover liner shall be 22 gauge. The cover shall be insulated with a 1” (25.4mm) thick fiberglass insulation, and reinforced as required to support a 40#/ft square live load. An extruded rubber gasket, mechanically fastened to the inside of the lid shall cause the hatch lid to seal.
Hardware: Hardware shall include interior handle, with a positive, one-point locking mechanism, exterior handle, and provisions for padlock, both inside and out. Pre-lubricated compression springs, encased in zinc-plated telescopic tubes, for smooth and controlled door operation at any position. An automatic, hold-open arm, with vinyl grip, shall be standard. All hardware shall be corrosion resistant, and all fasteners shall be of a self-locking type.

OPTIONS:
• Special Sizes - available on request


Model No. Door Size (w x l) Ship Weight lbs.
WB RH 36 x 30 151
WB RH 30 x 54 198
WB RH 30 x 96 450
WB RH 36 x 36 167
WB RH 48 x 48 275

Available in aluminum

Williams Brothers Corporation
Corporate Office
1330 Progress Drive
Front Royal, Virginia 22630

Western Distribution Center
Reno Nevada 

Toll Free Phone 800 255-5515
Phone 540 636-4444
Toll Free Fax 800 822-5001
Fax 540 636-4455

Toll Free Phone 800 255-5515
Phone 540 636-4444
Toll Free Fax 800 822-5001
Fax 540 636-4455

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