VEVOR NEMA Enclosure, 20 x 16 x 8 inches, NEMA 4X Fiberglass Steel Electrical Box, IP66 Waterproof & Dustproof Hinged Junction Box for Outdoor Indoor Use, with Mounting Plate(50x40x20 cm))

The maximum load-bearing capacity of this product is 20kg.

As for Outdoor Electrical Box, please check the 2D file of this product. https://we.tl/t-kIfC71ThFV

Outer Dimensions(H x W x D): 19.7 x 15.7 x7.9"/50 x 40 x 20 cm. Inner Dimensions(H x W x D): 18.5 x 15.6 x 7.5"/47 x 39.5 x 19 cm.

The back plane is fairly heavy galvanized steel. I could not measure it directly due to equipment mounted on it. However, the top and bottom clearance to the inner walls of the box are just less than 1/4" each. The side clearances are each just less than 1/2 ".

The hinge of this product is made of galvanized iron, the cylinder of the lock is made of plastic, and the lock nut and deadbolt are made of galvanized iron.

The nuts are wrench size 10mm. Thread M6 X 1.0 I used Din rails I bought locally years ago in 4 ft strips. I just custom fit them