The inside has a spring structure, so it can accommodate a variety of box sizes.
There are four holes for wall mounting. Type: For shielded type
Size (mm): 248 x 219 x 121
Material: ABS resin
Minimum applicable box size: 184 x 203 x 76 mm
Maximum applicable box size: 241 x 216 x 114 mm
Weight: 500g
