Value Pack: Outdoor dryer lint trap includes 3 pcs of bags sewn with loop strips and 3 pcs of adhesive hook strips. It is designed to be fit to an approximately 4Inch diameter dryer vent pipe, vent elbows and dryer vent hoods Catching Lint: If you have struggled with lint out of the dryer, this lint catcher for dryer trap and hold the lint, help it from flying around and sticking to the deck or other items. Avoid Nesting: If you are worried about birds nesting in your vents, or dirt into the vents, the exterior lint vent bag can be a great solution to your problem Easy to Use: The lint bag has sewn on loops with adhesive and hook and loop straps to secure it to the vent cover, and the hook and loop design helps you quickly and easily remove the bag for cleaning and reinstallation. Quality Materials: The dryer vent lint bag is made from high quality nylon, which is wear and can be washed over and over again. Adhesive hook strips can be easily attached to the vent, which can be used over and over again