Harmer Modulock Channel Green Roof Shaft Extension Piece for Access Chamber, 400mm x 400mm made from Moulded Polyurethane with height adjustment 50mm to 80mm.
Harmer Modulock Channel Drain is a highly versatile line drainage system designed to provide the ideal level access drainage solution, where rainwater run-off and percolation are required to be intercepted, at the perimeter of a building, or across thresholds and points of access into and out of a building.