Filter, MCE, 0.45µm, 37mm, 100/Pack Back Catalog number: GF37450 Manufacturer: SENSIDYNE Availability: In the manufacturer's stock Price on request - + Recommended 811-1004-01 PM-2.5 Impactor Kit, Replacement for Models 810-10 Price on request 911-0902-01-R Dual Manifold Splitter Kit, with Accessories Top Price on request GC7345PC Cassette, 37mm, 3 pc, 0.4µm Polycarbonate, 50/Box Price on request