WB TPS 8300 Series

Flush Aluminum Diamond Plate Floor Hatches with Drainage Trough

Sizes & Specifications

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Williams Brothers - WB TPS 8300 Series Flush Aluminum Diamond Plate Floor Hatches with Drainage Trough

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.