Fixed window with tilt-in top light in Reynaers SlimLine 38

With 33.5 mm of frame and 33 mm of sash in view (Classic; Cubic and Ferro 38.5 mm frame, T-section 48 mm), SlimLine 38 recreates the slim lines of traditional steel windows — the look often called Crittall-style — in aluminium. Frame depth 99 mm with an 86 mm sash for Classic, 76 mm frame for Cubic and Ferro; Uf 1.9 W/m²K; the HI+ version reaches down to 0.74 W/m²K as a whole window (Uw, so including the glass). There are four styles: Classic, Cubic, Ferro and Functional. The profile is Cradle to Cradle certified and, according to the manufacturer, 100% recyclable.

Reynaers' slim steel-look profile: 33.5 mm of frame in view, in aluminium.

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 Reynaers SlimLine 38 profile All about the fixed window with tilt-in top light layout