French doors in Rehau Synego

SYNEGO is Rehau's uPVC window and door system: 80 mm frame depth, 7 chambers in the outer frame and 6 in the sash, glass up to 51 mm, and Uf 0.94 W/m²K in the MD version. The face of frame and sash together is 117 mm as standard; the data sheet gives a range of 109 to 175 mm, and 144 to 218 mm on a French casement (figures given by Janwillem on 14 September 2026 from the Rehau data sheet). It has been tested up to burglar resistance class RC3, one class higher than most uPVC profiles in our range. SYNEGO profiles carry Rehau's EcoPuls label: according to the manufacturer, the profile is therefore more than 40% recycled material — a claim we take from the manufacturer's brochure and have not measured ourselves.

Rehau's uPVC window: 80 mm frame depth, 7 chambers and Uf 0.94 W/m²K.

Two doors that open outwards from where they meet: together they give a wide opening with no fixed centre section in the way.

Where the back door layout has one door opening outwards, French doors put a second one beside it. Both doors open outwards from the middle, so the whole width can be cleared — unlike a sliding patio door or a bifold door, where part of the glass always stays in front of the opening or folds against the side. It does need room outside for two doors to swing open.

The standard size is 1,600 × 2,200 mm. That is narrower than a sliding patio door or a bifold door, but with no tracks or folding hardware — a simpler and often cheaper way to get a wide opening onto the garden if you don't need the full width of a sliding patio door.

All about the Rehau Synego profile All about the french doors layout