Gast Rotary Vane Internal Filter Holder for Models 0323, 0523, RV03, RV05, AT03, AT05, 0823, 1023

Internal filter holder for Gast Rotary Vane models 0323, 0523, RV03, RV05, AT03, AT05, 0823, and 1023. Holds Gast internal filter (#AK524). Takes two per pump.