Filter, 25mm, 5.0µm, Polycarbonate, Plain White, 1 Back Catalog number: GFPC525 Manufacturer: SENSIDYNE Availability: In the manufacturer's stock Price on request - + Recommended GP25 Filter Support Pads, Porous Plastic, 25mm, 100/Pac Price on request 811-1004-01 PM-2.5 Impactor Kit, Replacement for Models 810-10 Price on request GCU37500PVCMW Cassette, 37mm 3pc 5.0µm, PVC Matched, (50µg), 50/ Price on request