This package contains two CF-3 Electrostatic primary filters to fit Panasonic uprights. Each filter pad measures 4 5/8" x 3 1/4" x 1/4", consisting of a 1/16" white electrostatic filter with a 3/16" grey foam backing. One fits in the bag chamber under the paper bag. These filters fit Panasonic models MC/MC-V51**, 52**, and 53** as well as MC-UG3** and MC-UG5**. (** denotes digits 00 to 99)   For similar products see our list of Panasonic Vacuum Supplies. Show Less