Blue Outerwear Prefilter Without Top, Round For 2" Diameter X 1-1/2" Tall, Outerwear #10-1132-02 Outerwears Pre-Filters Are Designed To Enhance The Efficiency Of Any Performance Or Exposed Air Filter. Features: Constructed With Proprietary Polyester Mesh With Uniform Micron Openings Treated With Water-Repellent Process UV Resistant Filters Debris Down To .005 Shatter Proof In Freezing Temperatures Resistant To Heat Up To 450 Degrees Puncture Resistant And Has Elasticity Characteristics Allowing The Threads To Return To The Original Position In The Event The Threads Have Been Impacted Or Shifted Note: Outerwear Pre-Filters Are Fine Micro Filter Covers Only And Do Not Include The Actual Air Filter Element. Air Filter In Photo Is For Shape Visualization Only. (Actual Air Filter Element Is Not Included)