Filter, 47mm, 0.4µm, Polycarbonate, Plain White, 1 Back Catalog number: GFPC447 Manufacturer: SENSIDYNE Availability: In the manufacturer's stock Price on request - + Recommended GP25 Filter Support Pads, Porous Plastic, 25mm, 100/Pac Price on request 800508-171-2305 GilAir-3 RC Pump, 5-Pack with Universal 5-Unit Cha Price on request 811-0509-01-R USB Wall Power Adapter Price on request