Dundas Jafine Heat Keeper Kit is a combination clothes dryer heat saver and lint trap designed to improve the efficiency of your drying process while adding extra heat and humidity to your room. This innovative kit features a damper handle that allows you to vent air either inside or outside, giving you greater control over your home's environment. It includes a removable and reusable lint filter that is easy to clean, helping to maintain dryer performance and safety. The Heat Keeper Kit is compatible with 4-inch flexible duct or metal pipe installations and comes with two stretch clamps for secure fitting. It is for use with electric dryers only and comes in a clean white color, blending seamlessly with your laundry area. Model Number: CHK100ZW6