The ECO-55 combo offers you the perfect deal for a quick and professional installation. This package includes the items listed below. All venting components are made of premium stainless steel and are UL/ULC listed. Kit containing: one Drolet pellet stove (DP00070) and one 4" Vortex pellet vent basement kit (VOPKB04 including one stove adapter, one 3"Ø to 4"Ø increaser stove adapter, two tees with cap, four pipe lengths: 12", 18", 24" and 36", one slip (adjustable section) - 9"L, two 90° elbows, one wall pass-thru, two wall supports and one jet cap).