WB W-APS 8100 Series

Watertight Aluminum Diamond Plate Floor Hatches

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Williams Brothers - WB W-APS 8100 Series Watertight Aluminum Diamond Plate Floor Hatches

Watertight, Aluminum Diamond Plate Hatch Provides an Economical Solution for Floor Access!

The WB W-APS 8100 Series Watertight Aluminum Diamond Plate Floor Hatch is a rugged, watertight, floodtight and gastight access door designed for new or existing openings in both interior and exterior applications including sidewalks, commercial floors, residential floors and utility floors. Featuring a heavy-duty, 1/4″ reinforced aluminum cover and extruded aluminum frame, both with a mill finish, hatch is an economical solution wherever floor access is needed. The door panel overlaps the frame, compressing the gasket, providing for a watertight fit. In addition, it is reinforced for pedestrian traffic and can safely handle 1560 psf loading (capable of holding up to a 25 ft. head of water).


  • Cover: 1/4″ Reinforced Aluminum Diamond Plate
  • Frame: Extruded Aluminum Angle Type with Strap Anchors
  • Finish: Mill Finish – All Parts of the Frame in Contact with Concrete Have a Coating of Bituminous Paint
  • Handle: Cast Aluminum Flush Lifting Handle
  • Lock: Stainless Steel Floodtight Cam Locks
  • Automatic Hold-open Arm: 316 Stainless Steel Hold-open Arm with Vinyl Grip That Automatically Keeps the Cover in its Open/Upright Position
  • Gasket: Watertight EDPM Gasket
  • Hardware: 316 Stainless Steel Hinges and Tamper Resistant Bolts/Lock Nuts.
  • Loading: 1560 psf (7617 kg/m2) Live Load
  • Installation: Styles Available for both New and Existing Openings


  • Construction: Steel
  • Hatch: Double Door
  • Custom Sizes: Available on Request


The WB W-APS 8100 watertight aluminum floor door is available in a variety of sizes including 24×24, 24×36, 30×30, 36×36, 36×48 and more. In addition, custom sizes are available upon request. Door features a flush flood tight lifting handle, stainless steel hinges with tamper proof bolts, floodtight cam locks and an automatic hold-open arm. Options include a double door and steel construction.

Manufactured for The Williams Brothers Corporation of America. MADE IN USA.