M550D plastic sewer grids are for roadways accessible to all types of road vehicles. M550D gratings are for drainage gutters crossing the roadways.
Individual grates are interconnected by metal spigotssecured by a spring lock supplied with each grate. M550D grids can be installed in prefabricated gutters with a composite length of 1.5m, or into ”L“ profiles (the gutter is concreted on the spot).
Drainage gutter plastic grids advantages:
easy installation into standard cast iron or Be-Gu frames
easy to handle because of its low weight
Rovasco material cannot be sold at a secondary raw materials collection yard
low noise level when a vehicle passes over the grid