WB TPS 8300 Series

Flush Aluminum Diamond Plate Floor Hatches with Drainage Trough

Sizes & Specifications

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Flush, Aluminum Diamond Plate Floor Hatch Features Drainage Trough for Water Control!

The WB TPS 8300 Series Flush Aluminum Diamond Plate Floor Hatch with Drainage Trough is a rugged, flush access door designed for new or existing openings in both interior and exterior applications including sidewalks, garages, laboratories and utility floors where water control is a requirement. Featuring a heavy-duty, 1/4″ reinforced aluminum cover and extruded aluminum trough, both with a mill finish, hatch also includes a threaded drain coupling and an odor-reducing gasket. In addition, it is reinforced for pedestrian traffic and can safely handle 300 psf loading.


  • Cover: 1/4″ Reinforced Aluminum Diamond Plate
  • Frame: Extruded Aluminum Trough with 1 1/2″ Threaded Drain Coupling, Odor-reducing Gasket and Continuous Anchor Flange on All Four Sides
  • Finish: Mill Finish
  • Handle: Cast Aluminum Flush Lifting Handle
  • Latch: Two-point Slam Latch
  • Hinges: 316 Stainless Steel Hinges with 316 SS Tamper Resistant Bolts and Locknuts
  • Lock: None – Includes an Exposed Staple for User-supplied Padlock
  • Automatic Hold-open Arm: 316 Stainless Steel Hold-open Arm with Vinyl Grip That Automatically Keeps the Cover in its Open/Upright Position at 90°
  • Hardware: 316 Stainless Steel Nuts and Bolts
  • Loading: 300 psf (1465 kg/m2) Live Load
  • Installation: Styles Available for both New and Existing Openings


  • Debris gasket
  • Recessed cylinder lock
  • Frame skirts for easy casting into a concrete top slab
  • Fiberglass insulation with metal liner
  • Nut rails with stainless steel sliding nuts for attaching cable holders, brackets and other hardware
  • Anodized finish
  • Stainless steel safety chains wi/aluminum support posts
  • Fall through prevention systems
  • Side drain threaded coupling (instead of standard bottom drain)
  • Adjust springs for wood or tile fill in recess area
  • Custom Sizes: Available on Request


The WB TPS 8300 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 lifting handle, stainless steel hinges with tamper proof bolts, slam latch, an exposed staple for user supplied padlock and an automatic hold-open arm. Options include a debris gasket, cylinder lock, insulation and more.

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