Inward-opening casement window 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.

A side-hung casement opens only one way — it turns inward on its hinges — and that is exactly why it costs less than a tilt and turn window.

A tilt and turn window has two positions: tilt (a gap at the top, secure enough to leave open overnight) and turn (fully open, also for cleaning). An inward-opening side-hung casement has only the second. That means less hardware and so a lower price, and the window stays just as easy to clean from inside. What you give up is the tilt position: there is no way to set the window to a small gap without it also being able to swing fully open.

The standard size is 1,000 × 1,400 mm, hinged on the left; in the configurator you set the size yourself, and you tell us the hinge side with your quote request. Choose a side-hung casement for a room where you rarely tilt and do value the full airflow when it's open — a store room, a garage, or a window nobody leaves on a night-time gap.

All about the Rehau Synego profile All about the inward-opening casement window layout