This compact, low-profile filter is designed just to fit our Weber 32/36 DGV Air Horn (Part No. 3890, sold separately). Free-flowing gauze mesh is sandwiched between two layers of stainless steel screen. Flexible silicone base is contoured specifically to fit our 32/36 DGV siamesed airhorn. Requires less than one inch of clearance above the airhorn and adds less than an inch to the girth. Perfect for use inside close-fitting bodywork or air scoops. Sold individually; one filter covers one air horn.