This internal Bi-Folding door system is offered with solid core, engineered oak Prefinished doors with clear glass. The narrow glazing bar design system gives you maximum light flow, whilst giving a neat contemporary look. Our RoomFold Standard systems are available in 3 and 4 door sets, using 533mm, 573mm, 610mm, and maximum leaf size of 686mm wide pre-finished glazed oak doors, giving you a wide range of potential opening sizes from 1684mm wide right up to 2820mm in a standard height frame of 2078mm. These systems are offered with no base track, so you have the benefit of a through room with your flooring in a seamless installation. The sets come with unfinished oak frame as standard (whichever option is selected), head track, hinges, running gear and doors preglazed, with a set of fitting instructions for you to assemble the set. ( Handle / latch and drop bolts excluded ) All our sets are reversible, so you can choose which room the doors open into by the way you install the frame, and you can choose which side the doors fold to, depeniding on which way you install them.