BLOCKS DRAFTS, DUST, LIGHT & COLD AIR — MULTIPLE PACKS AVAILABLE: Each set effectively seals the gap between your door bottom and the floor, blocking cold drafts, dust, insects, leaves, noise, and light. Helps reduce heat loss, lower energy bills, and create a more comfortable and quieter space for year-round weather sealing. RUST-PROOF ALUMINUM FRAME & DURABLE PP BRISTLES: Constructed with a thick aluminum alloy frame and flexible PP bristles that resist rust, corrosion, dampness, daily wear, and extreme temperatures from -20°C to +124°C. Maintains consistent sealing performance without shedding or hardening over time. BLOCKS LIGHT FOR IMPROVED SLEEP & PRIVACY: Dense bristles create a tight seal to stop light from leaking under doors, ideal for bedrooms, nurseries, home theaters, shift workers’ rooms, and garages. Blocks light spill from garages into living areas, also it helps prevent insects from entering. EASY SCREW-MOUNT INSTALLATION — NO ADHESIVE: Comes with pre-drilled oval slots and complete mounting screws for a secure, permanent fit. Installs quickly on interior, exterior, garage, roll-up, sliding, and workshop doors without peeling adhesive strips. CUT-TO-FIT SIZE & VERSATILE USE: Each set includes 5 heavy-duty aluminum holders and 5 brush strips. Aluminum frame width: 0.91-inch, brush strip width: 2.5-inch, length: 39.37 inch per strip. Full set length: 16.4ft. Easily trim to fit any door width, working great on uneven thresholds, tile, carpet, wood, and rough stone floors. This Retsun heavy-duty door brush sweep is designed to seal gaps between doors and floors, effectively blocking drafts, dust, insects, leaves, light and noise. It helps reduce heat loss and lower energy costs, making it ideal for USA all-season use. Built with a sturdy rust-resistant aluminum alloy frame and durable Polypropylene bristles, this door bottom seal withstands freezing temperatures, moisture and road salt. The flexible brush creates a tight barrier while allowing smooth door operation without sticking or dragging. Pre-drilled oval holes and included mounting screws ensure quick installation with basic tools. The sweep fits most interior, exterior, garage, workshop, industrial and commercial doors and can be trimmed for a precise custom fit. A practical and long-lasting upgrade for homes, offices and high-traffic areas, improving comfort, cleanliness and overall energy efficiency.