About this item: Heavy gauge aluminum strip and premium brush Premium brush will enhance entry door Easy to install Helps save energy Frost King, simply the most trusted name in home insulation. From your basement to your roof, from the front door to the back. Frost King products are there to save you money and save you energy! Door Sweep Keep Your Home Clean The gaps underneath your doors not only let in drafts, but also dust, dirt, rain, noise and insects. Installing a door sweep will reduce these problems. Sealing the gaps under your doors can also make your home more energy efficient and help you save money on your utility bills. Door sweeps are inexpensive and easy to install. Easy Installation Use a Frost King door bottom to help seal out drafts coming in under your door. They are available in a variety of shapes, materials and colors to fill your every need. U-shaped, so they slide easily on to aluminum, steel, or wood doors thick. It works on both old new doors and is designed to be used in conjunction with saddle thresholds. Simple slide-on installation screws on or stability.