1G 35mm Galvanised Steel Extension Box,with one adjustable lug by Knightsbridge £2.90 + VAT SKU EG135 1 2 3 4 5 6 7 8 9 10+ Quantity Quantity Add to cart Description Specification Quantity Breaks Description Used to extend standard flush wall boxes that have been sunk in too deep or to accommodate deeper wiring accessories - 1G - 35mm - Adjustable lug Specification Datasheet Quantity Breaks