Small Sump Roof Drain
FD-4060GX series of roof drains consist of cast iron body with bottom outlet, membrane clamp
with integral gravel stop, removable dome and stainless steel perforated extension.
Used in IRMA flat roof construction (inverted roof membrane assembly). Small diameter body is particularly adaptable where limited space is available. Flashing clamp holds flashing and roofing materials securely to the drain body.The dome provides sufficient free area for quick drainage of rain water and protects the drain sump and connected piping from the intrusion of debris. The stainless steel extension gravel stop at height specified is supplied to retain the crushed gravel used in IRMA flat roof construction.