The DuraVent 4PVP-36 is a stainless steel chimney pipe with a 4" inner diameter, designed for use with certain DuraVent PelletVent Pro models. It is UL listed and features a silver color, making it compatible with DuraVent products. This chimney pipe is 36 inches in length and is a part of the PelletVent Pro collection, providing a reliable and efficient solution for heating and ventilation systems. Additionally, it comes with a California Prop 65 warning due to its materials.