Panel and Enclosure Hole Plugs: Type - Hole Plug, Window Style; Mtg Hole Dia.- in - 0.750 in; Mtg Hole Dia.- mm - 19.1 mm; Max. Panel Thickness - 0.125" (3.2 mm); Plug Height - Length - 0.406" (10.3 mm); Plug Head Dia. - 0.859" (21.8 mm); Installation - Push-In; Material - Polycarbonate; Color-Finish - Clear; Temperature Rating - 115 deg C (239 deg F) Max.; Material Specification - Polycarbonate UL Rated 94V-2; Listing Description - WP-750; Manufacturer Series - Heyco Window Plug