3"/90mm Aerated Bottom Drains for Ponds fitted with a Liner  Ref: 20
Fabricated Bottom Drain - Sump Details

Sump Outside Diameter 200mm
Sump Wall 5mm (approx)
Sump Flange Diameter 300mm
Sump Flange Thickness 6mm
Liner Ring Thickness 6mm
Self Tapping Screws for Flange Quantity 8 - 5.5 x 25mm Stainlless Steel Pozi Pan self Tapping
Base Thickness 6mm
Socket for Stem - Welded to Base 48.3mm
Water outlet 3" or 90mm
Inlet for Air Hose 1" or 1 1/2"
32mm or 40mm