Aerated Koi Pond Bottom Drain 4 inch manufactured in solid PVC pipe, welded for superior strength has an additional 1” airline connection. The stand pipe & disc allow for a diffuser to attach to the top for which the airline can be attached - can also be made to suit any size outlet.
Both of these drains can be supplied with a clamping ring extra to suit liners.
Approx. weight 4695g