Sets of 3 or 4.High density "E1" chipboard with metal fronts and metal 'bridge' fittings.Routed, pre-drilled and all scres and fittings provided. Flat packed for easy home assembly.Set of 3: 1150mm x 750mm x 400mm [46" x 30" x 16"] approxSet of 4: 1500mm x 750mm x 400mm [60" x 30" x 16"] approxDue to carrier restrictions, we regret, these boxes are not available for delivery to Northern Ireland or Scotland.