Provide an easy way to mount/install security camera, Dimension: 4 x 4 Inch, Material: Fiber See the Picture for Junction Box Installation Example Brace Screw Holes: If repeatedly open and close screw still it’s screw holes fitting would not be loose Junction box is waterproof or weatherproof, it protects connectors from being rusted or oxy-genated. Prevent cables being cut and protect the wiring, Quantity: 1 Nos/Pcs, Ideal use for Camera System