Black plastic top with black plastic plastic adjustable base

It's thermally and Ignition Protected with a shut-off pressure switch

Allows mounting on 2-1/8" thick surface

Waterproof cap protects the base opening when the the pole is removed

Gray Cast AluminumStandard Product

TH Marine - Aerator Filter, Part No. AF-1-DP - Size 3/4” Or 1-1/8” Weatherproof Cover Black plastic top with blackAn externally installed filter for aeration systems. Made of black poly material This is a simple to install item which prevents aerator system problems due to foreign matter (grass, weeds, and leaves) from clogging pump. Installs with three screws over intake for aerator pump.