A black ABS enclosure with side flanges allowing wall, or even ceiling mount. Snap fit design locks together to enclose your circuitboard or project inside.Features:Wall mount holes: 2 x 4.5mm Dia.Internal holes: 4 x 2.6mm x 6mmInternal dimensions: 45(L) x 46(W) x 18(H)mmExternal dimensions: 70(L) x 51(W) x 27(H)mm