Unbranded All Style 4 in. Dia Medium Retro-Split Storm Collar Umbrella Flashing fits Nominal Pipe Size (NPS) 4.50 in. O.D. Pipe

Medium size, commercial grade, Retro-Split Rubber Storm Collars weatherproof process piping and irregular structural steel support column profiles that fit within a 6 in. Dia circle including up to Nominal Pipe Size (NPS) 5.0 in. (5.563 O.D.) conduit. NPS being the standard for North American round pipe. Precise geometric shapes are pre-molded into the top plug of Retro-Split Storm collar which opens to permit mounting onto a penetration from the side. Each collar includes a wraparound skirt with tabs th...