Alumina Airstone - All Size Barbs

Alumina Airstone - All Size Barbs Details: "Alumina" air stones - three times stronger than white silica air stones! Produces a finer bubble with no increase in pressure Inlet fittings are set into the body of the diffuser, making them much less likely to break or twist loose Higher density means self weighting Cleanable with muriatic acid or chlorine More resistant to ozone Creates finer bubbles for increased aeration efficiency with no increase in pressure Part # Dimensions CFM Requirment   Fitting Size AS15 1 1/2'' x 1 1/2'' x 1 1/2'' .20 3/16'' barb AS325 1 1/2'' x 1 1/2'' x 3'' .30 1/4'' barb AS337 1 1/2'' x 1 1/2'' x 3'' .30 3/8'' barb AS625 1 1/2'' x 1 1/2'' x 6'' .5 1/4'' barb AS637 1 1/2'' x 1 1/2'' x 6'' .5 3/8'' barb AS650 1 1/2'' x 1 1/2'' x 6'' .5 1/2'' npt AS937 1 1/2'' x 1 1/2'' x 9'' .75 3/8'' barb AS950 1 1/2'' x 1 1/2'' x 9'' .75 1/2'' npt AS1237 1 1/2'' x 1 1/2'' x 12'' 1.0 3/8'' barb AS1250 1 1/2'' x 1 1/2'' x 12'' 1.0 1/2'' npt