The alveolate broad flanges of DEDRA 400 gratings enable to obtain a good bedding as well as a reduced transmission of the loads to the structure located under the gratings.

The various versions of frame enable to choose the version most adapted according to the installation confines.

• Frame equipped of 4 flanges for multi-directional collection or 3 flanges for installation along a kerb.
• Frame with total opening of 400 mm or frame with mudpan bearing plate and centring studs pipes and 400 ND plastic extensions.

Kerb setting

Installation type multi-directional collection

Implementation of the mudpan

Installation of DEDRA 400 grating with 3 side-flange frames and mudpan bearing plate

1- Implementation of the sealing product - PVC pipe	2- Implementation of the frame.
3- Upgrade of the frame.	4- Finishing.
5- Cleaning of the seatings	6- Grating in place.

The illustrations represent the first installation of a DEDRA 400 grating standard part, what explains why is not covered.