This listing is for a 2 pack of Puma Industrial Air Compressor Intake Filters. These filters fit most of PUMA 5 HP, and 7-1/2 HP electric models. These also work for 11 and 13 HP Gas Units. The filter number is Part Number 2142002. The measurements of these filters are 3-3/4" outside diameter, and about 2-3/8" Inside Diameter. These filters are 2-1/4" tall. Measurements: 3-3/4" Outside Diameter 2-3/8" Inside Diameter 2-1/4" Tall