DIAPHRAGM KIT FOR AP-20
Replacement Diaphragm Kit for Pondmaster AP-20 Air Pump Item# 04520, Supreme Aquarium Oxy-Flo AP-20 High Volume Air Pump Item# 04220 and Supreme Hydro Oxy-Flo AP-20 High Volume Air Pump Item# 40522
Replacement Diaphragm Kit for Pondmaster AP-20 Air Pump Item# 04520, Supreme Aquarium Oxy-Flo AP-20 High Volume Air Pump Item# 04220 and Supreme Hydro Oxy-Flo AP-20 High Volume Air Pump Item# 40522