Fixed window with tilt-in top light in Aluprof MB-Ferroline

The Aluprof MB-Ferroline is made to look like steel pivot doors and old factory windows: 97 mm of sightline for frame and sash together, in aluminium. At 97 mm it has the slimmest combined frame-and-sash sightline of the Aluprof windows; only the Reynaers CS 77 (89 mm) goes below it in aluminium — for comparison, the Gealan S 9000 in uPVC sits at 119 mm. That slimness costs insulation: Uf 1.50 W/m²K, against 0.57 for the MB-86N. The 110 mm frame depth is there for stiffness, not for insulation.

Steel-look aluminium windows: a 97 mm sightline, the slimmest of the Aluprof windows.

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 Aluprof MB-Ferroline profile All about the fixed window with tilt-in top light layout