Pool hose adapter 11238 for the skimmer wall mount hose adapter only.

The pool vacuum hose adapter connects the side of the pool to the skimmer hose, allowing water to flow from the skimmer kit into the filter

Adapter 11238 for Intex Products: Wall Mount Surface Skimmer Dexlue Maintenance Kit

Poolside connection end inside measurement is approximately 3 1/4 inches Hose connection end outside measurement is approximately 1 1/2 inches

Above ground pool vacuum adapter 1.5" Skimmer hose connects skimmer basket to outlet.