Single fixed window in Reynaers ConceptFolding 77

ConceptFolding 77 is the second bifold door we carry alongside the Aluprof MB-86 Fold Line HD: 2 to 8 panels, each up to 1,200 × 3,000 mm and 120 kg; a four-panel set goes up to 4,000 × 2,700 mm overall. Uf 1.66 W/m²K; the slim SL version has a narrower joint between the panels (122 mm against 144 mm). There are four threshold options, from completely level to a version that resists driving rain up to class 9A. Tested to burglar resistance class RC2.

Reynaers' aluminium bifold door: up to eight panels, 120 kg each.

One pane, one piece of glass and nothing that moves — the simplest window you can put together.

A fixed window has no hinge, no handle and no gap round a sash to let in draughts: the glass is held in the frame all the way round. That makes it the cheapest form of pane there is, because there is no tilt and turn hardware, no handle and no extra seal in it. Choose it where the space doesn't need ventilation — a bathroom window with a separate extractor fan, a stairwell, or a pane next to a door that already lets in enough air.

The standard size is 1,500 × 1,500 mm, but that is a starting point and not a limit: in the configurator you set your own width and height. Because there is no hardware in it, a fixed window is also the form that can go widest and tallest without a sash becoming too heavy to operate — that limit simply doesn't apply here.

All about the Reynaers ConceptFolding 77 profile All about the single fixed window layout