Fixed window with tilt-in top light 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 tilt-in sash at the top, a fixed pane below carrying most of the glass: this window combines ventilation up high with a large, still area of glass.

This window splits its height in two: a small bottom-hung sash at the top that tilts inward for ventilation, and a larger fixed pane below that doesn't move. It is the same split as the fixed window with top light, but with an opening in the upper pane instead of fixed glass. That suits a bathroom, WC or stairwell where you want to air the room now and then without a sash swinging open at eye level.

The standard size is 1,100 × 1,800 mm, with the tilt-in sash taking a quarter of the height and the fixed pane the rest. If in that same spot you do want full ventilation and the option of cleaning the glass from inside, the tilt and turn window with tilt-in top light — the same window with a tilt and turn sash instead of the fixed lower pane — is the broader choice.

All about the Rehau Synego profile All about the fixed window with tilt-in top light layout