These under door draft stoppers are such an easy fix for so many common problems! The brush design effectively blocks cold air, dust, and noise from passing under your doors. Installation is simple - just measure your door width, cut the strip to size (they're 39 inches long), peel off the adhesive backing, and press firmly into place. The super-strong adhesive holds securely on flat surfaces. They work great for reducing energy costs by preventing heated or cooled air from escaping your rooms. The noise reduction is noticeable too - perfect for creating quieter bedrooms, offices, or nurseries. The white color blends discreetly with most door styles. They're versatile enough for interior doors between rooms, exterior doors, sliding doors, cabinets, and even furniture. In winter, you can use a hair dryer to warm the adhesive for a stronger bond. For such an affordable product, these draft stoppers make a big difference in comfort and energy efficiency. They're one of those simple home improvements that you'll appreciate every day!