This version of Manthorpe's highly popular lockable drop-down door for loft access delivers a uValue of 0.15 W/m2k and comes supplied with a key lock. Perfect for creating secure, energy-efficient loft access, this product has been specifically developed for use in meeting higher levels of the Code for Sustainable Homes. Featuring the sleek, low-profile design that's made the range so popular, this highly effective draught-sealing loft access door is manufactured with a thermally insulated lid, secure catches and a textured finish for easy cleaning. Manufactured in accordance with Part L of the Building Regulations, this drop-down loft access door is built with a foam compression seal, guaranteeing a draught-free finish. Each item is supplied with a preformed frame and all the screws needed to secure it safely in place. Create a more effective draught seal and prevent moist air from entering the loft space with this innovative, lockable drop-down door. Manthorpe Lockable Drop Down Loft Door Specification Frame fitting size: 562mm x 726mmOpening size: 545mm x 715mmVisible Size: 686mm x 856mmMaterial: High impact polystyreneDraught seals: Expanded polyurethaneInsulation: 150mm Expanded PolystyreneuValue: 0.15 W/m2KColour: White