4m x 3m Self Build Insulated Garden Office DIY kit, Garden Room, Studio "Mercury
3m x 4m outside walls size ( ( 9’-10”x 13’-1” ) size plus 40cm canopy roof and 40cm step platform. depth x width - 3m x 4m (9’-10”x 13’-1”). Easy to make, warm, good quality product. DIY kit, assembling are not included in the price. ).