Car park outlets have been designed to cope with two different installation requirements with the 'Standard' version allowing for 1 tonne loadings whilst the newly introduced 'Heavy Duty' will allow for up to 25 tonnes. The standard makes use of the usual circular Flat Grate and Clamping Ring but has an additional clamp which, with the addition for a Caroflow Raising Ring, allow for the application and sealing to a tow coat asphalt waterproofing layer with paving grade topping.