Our Titania garden office range has a specification far better than any competitor. This office has a secure 12-point locking system on the Wide Opening, French Double Doors, and a Tall Walkthrough Height. This range also features large, 28mm thick double glazed uPVC windows with unique Dunster House Domestic Hinges, along with Multi-Point Locking. Unlike competitors, we use PIR (Polyisocyanurate) insulation in the walls, roof and floor, not rockwool or bubble wrap. We use PIR (Polyisocyanurate) as we feel it is one of the best thermal insulators you can get. FEATURES: Domestic Standard uPVC Windows and Doors 28mm Double Glazing Energy Saving High Density Insulation Tall French Doors with 12-Point Lock Waterproof Insulated IzoPanel Roof Moisture Resistant Walls and Floor Fire Resistant Inner Wall Pressure Treated Timber for Longevity and Low Maintenance (10 Year Guarantee Against Rot and Insect Infestation) Easy to Build Panel System Dunster House Ltd. - Over 25 Years Of Supplying