Angle Frame Pedestrian Loading Single Door Retrofit

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Angle Frame Pedestrian Loading Single Door Retrofit

The retrofit angle frame floor access door is designed for interior and exterior applications where watertightness is not required. The frame is to be installed into an existing opening.

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Material: Aluminum, steel or stainless steel available
Frame: 1/4” material with horizontal flange that is 9/16” diameter holes for bolting into the existing opening and an integral door seat on all four sides
Covers: 1/4” diamond plate reinforced for 300 PSF Pedestrian loads
Hardware: All 316 SS nuts, bolts and washers
Hold-Open Device: 316 SS Hold-open arm with secondary latch mechanism
Lock device: Staple for padlock protrudes through cover
Lift Handle: Recessed lift handle lays flush with top of cover
Warranty: Ten (10) years on aluminum, five (5) years on steel and stainless steel

Optional Features

  • Stainless steel horizontal springs or gas shocks for easy opening
  • 316 Stainless steel watertight slamlock and other locking devices
  • Bituminous coating on frame surface in contact with concrete
  • Cushion for noise dampening
  • Nut rails with stainless steel sliding nuts for attaching cable holders, brackets & other hardware
  • Fiberglass insulation with metal liner
  • Custom lettering
  • Anodized finish
  • Stainless steel safety chains with aluminum support posts
  • Fall Through Protection Systems
  • Slip resistant surface bonded to cover plate
  • All steel or stainless steel material (no beveled edge)
  • Mounting holes on vertical/inside frame wall for security
  • Reading Lid


The retrofit floor access door shall be Model APS300 RETROFIT as manufactured by USF Fabrication, Inc. with the size being specified on the plans. Door leaf shall be 1/4-inch thick aluminum diamond plate reinforced for a 300 p.s.f. live load. The extruded aluminum angle frame shall have a horizontal flange with 9/16-inch diameter holes for bolting to the existing floor and an integral door seat on all four sides. The horizontal leg of the frame will have a beveled edge that slopes to the floor surface. The floor access door shall be equipped with a flush lifting handle that does not protrude above the cover, and a 316 stainless steel hold open arm with secondary latch mechanism that automatically keeps the cover in its upright, open position. The door shall have 316 stainless steel hinges and 316 stainless steel tamper resistant bolts/locknuts. A staple for a padlock shall be supplied for security. The door shall be manufactured and assembled in the United States.

Light Vehicular / Occasional Truck Traffic

ASTM C1802-20 Load Level 3 & 4