Window with a dummy sash 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 dummy sash draws the outline of a tilt and turn sash in the frame, without the hardware that would let it open.

Side by side, a real tilt and turn window and a window with a dummy sash are hard to tell apart: both show a sash inside the frame. The difference is in what you can't see — there is no hinge, no tilt position and no handle in it. That makes this pane right for the spot where you want to keep the look of a tilt and turn window but don't need another opening: for example the one pane in a row of windows where the others really do open.

The standard size is 1,500 × 1,500 mm, the same as the single fixed window; in the configurator you set it to match the tilt and turn window next to it, so a real tilt and turn window and a dummy sash can sit side by side in one elevation without the sightlines jumping. If you actually want to show that a pane doesn't open — for a calmer look, or to leave a would-be burglar less to try on a vulnerable spot — the plain fixed window without a drawn sash line is the simpler choice.

All about the Aluprof MB-Ferroline profile All about the window with a dummy sash layout