Installation of the DEDRA 400 Concave Grating D400 class

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.

Two types of frame enable to choose the version most adapted according to the installation confines:

• Frame with clear opening of 400 mm
• Frame with mudpan bearing plate and centring studs for 400 ND PVC pipes.