1.Door brush is designed to seal the gap between the bottom of the door and the top of the floor surface.2.All door bottom sweeps are supplied with black brush.3.Designed with aluminum alloy bottom holder and PP brush, anti-rust and durable.4.Greatly reduce the infiltration of light and wind, control the penetration of dust and fumes.5.Suitable for doors only.6.Mounting screws are included here. Specification:Product Name: Door BrushPackage Content: 1 x Door Brush, 4pcs x ScrewMain Color: Brown, BlackMaterial: Aluminium Alloy, PPBrush : PP Silicone Soft BrushWeight: 286gMounting Hole Size: 5.5 x 4mm/0.22-inch x 0.16-inch(L*W)Mounting Hole Distance: 290mm/11.4-inchBrush Length: 1M/39.37-inchBrush Height: 40mm/1.6-inchBottom Holder Size: 1000 x 23 x 1mm/39.37-inch x 0.91-inch x 0.04-inch(L*W*T)Bottom Holder Shape: h ShapeTotal Height: 63mm/2.48-inchGroove Width: 4mm/0.16-inch