Single or double leaf covers are constructed of 1/4"
(6.35mm) diamond pattern plate and reinforced for a
300 lb/ft2(1464 kg/m2) liveload. Features reinforced
composite spring tubes, heavy forged brass hinges,
and zinc plated/chromate sealed hardware. By Bilco.
Construction Specifications:
Material: Cover and frame are 1/4" steel
Cover: Diamond-pattern tread plate reinforced for
300 psf (1464 kg/m2) live load
Frame: Formed channel frame with full anchor
angle welded around the perimeter. A 1-1/2"
drain coupling is welded under the frame for a
pipe connection to a dry well or disposal system.
Hinges: Heavy forged brass hinges with 3/8"
Type 316 stainless steel hinge pins
Latch: Type 316 stainless steel slam lock with
fixed interior handle and removable exterior
turn/lift handle. Latch release is protected by a
flush, gasketed, removable screw plug
Lift Assistance: Compression spring operators
enclosed in telescopic tubes. Automatic holdopen
arm with grip handle release.
Finish: Alkyd base red oxide primer
Hardware: Engineered composite compression
spring tubes. Steel compression springs with
electrocoated acrylic finish. Slam lock and all fasteners
are Type 316 stainless steel. All other
hardware is zinc plated/chromate sealed.
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WB Type J & JD Floor Hatch