Inlet filter has perforated a outer cylinder; the inner cylinder is wrapped with fine 0.009 mesh screen. Replaceable cover is made of 7/8-thick, 100% polyester filter media. It provides 80% efficiency to 5 microns and is for use with Fuji, Gast, Rotron, Siemens, and Spencer regenerative blowers. This listing is for each. Technical Specification Item Inlet Filter with Cover Inlet (In.) 1-1/4 (M)NPT Dia. (In.) 3-7/8 Height (In.) 7-3/8 Application For Gast, Rotron, Siemens and Spencer Regenerative Blower, To Protect Regenerative Blowers by Filtering Damaging Particles from Inlet Air For Use with Blower No. VFC100P-5T, VFC100A-7W, VFC200P-5T, VFC200A-7W, VFC300P-5T, VFC300A-7W, VFD3S, VFD2S
MNPT Inlet 1.25", Diameter 3 7/8", Height 7 3/8"
Filter Assembly - Cover included