The 4m x 4m Creswell Insulated Garden Room is fit for use all-year round made with 100mm thick double skinned walls containing EcoQuilt multi-foil insulation. This is a perfect space to set up your garden office, guest space, or peaceful outdoor escape. The key features include:. *Free Home Installation *14mm double glazed with 2 fixed and 2 top opening windows *EcoQuilt insulated walls *EcoQuilt multi-foil insulation and 16mm Interlocking Tongue and Groove Roof *Customisable design *Air Tec Insulated floor *10-year anti-rot guarantee