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BS Aluminum Electrical Circular Terminal Junction Box , Three way box
Material: Malleable Iron,aluminum
Standard: BS4568/BS31
Size: 20mm, 25mm, 3/4”, 1”
60.3mm Internal Diameter x 25.4mm Deep Tapped M4 in mm sizes and 2BA in imperial sizes of 50.3mm with tapped hole in base for earthing screw.
Advantage
Aluminum material,more cheaper
With BS thread, can be supply
Can be supply the 3/4" and 1" standand sizes
3/4" is 25mm hight,1" is 30mm hight of the box
Better than malleable circular box
Switch box will one pulling holes
Size: 20mm 25mm