OPW - 3 Inch x 4 Inch Vapor Recovery Adaptor with 4 Inch Riser

Morrison - 4 Inch Tight Fill Adaptor Top Seal

OPW - 4 Inch Bronze Swivel Fill Adaptor

OPW - 4 Inch Bronze Vapor Swivel Adaptor EVR

OPW - 4 Inch x 4 Inch Fill Adaptor Bronze Top Seal

OPW - Face Seal Adaptor

OPW - 2 Inch Slip-On Adapter for Series 523 Vents