Photo 1 of FILTERUP DEX2420MAR2 Manual Air Relief Assembly, Air Relief Valve, Compatible with Pro Grid De Swimclear and Swim Clear Cartridge Filters, Replace# Hay-Ward DE and Cartridge Pool Filter 2420MAR2

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Photo 1 of FILTERUP DEX2420MAR2 Manual Air Relief Assembly, Air Relief Valve, Compatible with Pro Grid De Swimclear and Swim Clear Cartridge Filters, Replace# Hay-Ward DE and Cartridge Pool Filter 2420MAR2Photo 2 of FILTERUP DEX2420MAR2 Manual Air Relief Assembly, Air Relief Valve, Compatible with Pro Grid De Swimclear and Swim Clear Cartridge Filters, Replace# Hay-Ward DE and Cartridge Pool Filter 2420MAR2