#1 Multi-Flash Multi-Port, retrofit style black EPDM, square-based pipe flashing boot. 4-1/2 x 4-1/2" base. Fits 1/4" up to 2-1/4 or 2-3/4" OD pipes, plus up to four 1/4" (6mm) lines. Price/each. (Aztec # mp101ba)
Retrofit flashings (also called a split flashing/or split boot) are used in applications where you cannot slide the flashing over / down a penetration. The retrofit flashing is split which allows you to wrap around the pipe penetration and seal. Fits pipe