Wade 3400 Series (medium sump) outlets for inverted roofs include an integral stainless steel gravel guard to retain insulation and prevent the ingress of gravel both in service and when the dome is removed for cleaning.
Standard product features
Body: Cast iron.
Area drained (at head, 35 mm; rainfall rate, 75mm/h):
Load rating class (BS EN 1253):
K3 (suitable for areas without vehicular traffic, such as balconies, terraces and roof gardens).