The FORMA lid has been designed for use in heavy duty industrial areas e.g. distribution depots, dock areas, service yards etc. The Forma lid has been tested to D400 loading as standard.

* Tests performed using C50 concrete. Copies of test results are available upon request.

  • Standard loading conforms to BS EN1433 category D400
  • Reinforcement supplied with lid to suit required loading
  • Manufactured in lightweight G.R.C
  • Eliminates risk of lid movement
  • 200mm depth accommodates most slab depths
  • Supplied with plastic caps to prevent spillage to drainage slots during installation

If you require any assistance or more information please contact us by phone on 01603 488700 or by email

Forma D400 Lid Unit 600 line drawing
Forma D400 Lid Unit 600 gratings

    All Available Downloads for Forma D400 Lid Unit 600

    Forma D400 Lid Unit 600 File

    Datasheet and Installation Instructions for Forma D400 Lid Unit 600