This kit contains: 1x 4" stove adapter, 1x 3"Ø to 4"Ø increaser stove adapter, 1x tee, 1x cross tee with cap, 1x pipe length 12", 1x length 18", 1x length 24", 2x length 36", 1x slip (adjustable section) - 9"L, 2x 90° elbows, 1x wall pass-thru, 2x wall supports and 1x jet cap.