UPGRADED PERFORMANCE: Garage door seal strip, U-shape + O-ring combination design provides multiple layers of sealing at the bottom, which can reduce noise and isolate heat/cold, effectively preventing airflow, dirt, dust, rain, leaves and debris from entering your interior space, ensuring your garage stays clean and dry. HIGH QUALITY ALUMINIUM AND EPDM MATERIAL: The aluminium guide rail is strong enough to avoid deformation caused by collisions, and the surface is specially treated to prevent rust in contact with water. Garage door weather stripping adopts EPDM material, excellent for extreme temperature conditions (-40 ~240 F). It can better block external dust, rain, and snow. EASY TO USE: The universal garage door bottom weather seal and retainer kit, pre-drilled screw holes for easy installation. Great option for most garage door bottoms, such as steel or wooden door bottoms.