Flush mount, 316 grade cast stainless steel deck fillers. Unique pop top cap. Depress and rotate inner cap to unlock the pop up knurled grip for opening. Also incorporates recess to accept deck filler key. Features coarse thread, ‘O’ ring seal, retaining wire (excluding 192311, 192315) as well as CE icon style identification. 192311 and 192315 waste fittings accept camlock pump out adaptors, refer to 138764 and 139290.