The waltons grand storage unit is a compact garden tall store measuring 110 x 32 the grand storage is a great space saving design that can easily fit into even the smallest of gardens the shed is constructed from 28mm x 28mm framing and 12mm tongue and grooved shiplap cladding the grand storage unit is also supplied with a wide single doorour garden buildings are pre treated with a water based timber treatment for protection during transit in order to receive the full 10 year anti rot g