GRM60 Series Plastic Filter Kit for 60mm fans Guard & Snap-in Retainer Plastic - reinforced ABS, UL approved materials Rating UL94V-O Media Polyurethane foam material meets UL94HF-1 or higher. Porous mesh 45PPI or 60 PPI available PPI = Pores Per Inch. 30 or 45 PPI recommended for most fan applications Snap-in Retainer makes cleaning or replacing media simple. No tools required.* Low air resistance, filtration of particulate matter, noise abatement Part Number Description GRM60-30 60mm Fan filter kit, includes G60P guard, R60P, retainer, and 30 ppi media GRM60-45 60mm Fan filter kit, includes G60P guard, R60P retainer, and 45 ppi media GRM60-30/PK 10-Pack GRM60-30 filter kits, Boxed GRM60-45/PK 10-Pack GRM60-45 filter kits, Boxed 10557 Metric Drive Dallas, Texas 75243 214-340-0265 OrionFans.com RoHS Compliant Information and data is subject to change without prior notification. Mouser Electronics Authorized Distributor Click to View Pricing, Inventory, Delivery & Lifecycle Information: Orion Fans: GRM60-45 GRM60-30 R60P