This pair of grey outside, white inside Sliding Doors is manufactured from high quality uPVC and comes factory-glazed with thermally-efficient double-glazed glass units, featuring toughened safety glass for your peace of mind. The excellent thermal insulation of this door set is designed to keep your home warmer in cold weather and save you money on heating bills. The universal design of the door set allows you to choose the direction of opening at the time of installation. Supplied unassembled as 2 door leaves and a frame pack.