Standard: BS 4568 and BS EN 61386 Material: Malleable Iron Finish: Hot dipped galvanized to meet the most demanding Class 4 corrosion protection standard Internal Diameter: 60.3mm 20/25mm Boxes Cover fixing M4 at 50.8mm Centers. 20mm Boxes Internal Depth 25mm Minimum 25mm Boxes Internal Depth 28mm Minimum Tapped M4 hole for the earth terminal in base. Supplied without covers or fixing screws unless ordered
SMALL MALLEABLE BOXES
Standard: BS 4568 and BS EN 61386 Material: Malleable Iron Finish: Hot dipped galvanized to meet the most demanding Class 4 corrosion protection standard Internal Diameter: 60.3mm 20/25mm Boxes Cover fixing M4 at 50.8mm Centers. 20mm Boxes Internal Depth 25mm Minimum 25mm Boxes Internal Depth 28mm Minimum Tapped M4 hole for the earth terminal in base. Supplied without covers or fixing screws unless ordered
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