Anti-slip: The bottom is equipped with anti-slip foot pads to that the housing is stable and not easy to move. : metal material, waterproof, non-, and wear-. External Size: 170x130x80mm/6.7inchx5.1inchx3.1inch(LxWxH). Installation method: installation, underground electrical enclosure switch junction box. Uses: Widely use in electronic project, protect power from water, touching accidentally. Product Name: Junction Box Mounted Type: Mounted External Size: 170 x 130 x 80mm/6.7inch x 5.1inch x 3.1inch(LxWxH) Internal Size: 160 x 120 x 70mm/ 6.3inch x 4.7inch x 2.7inch(LxWxH) Colour:blue+white Material:plastic+iron Package Contents: 2 x Junction Box Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.