Inward-opening casement in Gealan S 9000 MD

Gealan S 9000 MD is the German version of the same S 9000 system that our Dutch versions Base, Haax, Slim and Styl are built on. The difference is in how the window closes and opens. MD stands for Mitteldichtung, a centre seal: there are three sealing levels between outer frame and sash. The profile is 82.5 mm deep, has 6 chambers and takes glass up to 52 mm. The Uf is 0.89 W/m²K, against 1.10 for the Dutch Base, Haax and Slim. It is a window that opens inwards: tilt and turn, side-hung, tilt-only or a door, but no window that opens outwards, whether top-hung or bottom-hung. If you want a window that opens outwards, the Dutch S 9000 is where you end up.

The German S 9000: 82.5 mm, centre seal and Uf 0.89 W/m²K.

New build. Suitable, and at Uf 0.89 the best-insulating Gealan profile we offer. Do bear in mind that all the windows open inwards.

Renovation. Suitable. At 82.5 mm frame depth the frame sits less far into the wall than the 120 mm S 9000 versions.

Gealan S 9000 Slim. The same 82.5 mm frame depth, the same 74 mm outer frame and the same 119 mm in view, but the Dutch version: a rebate seal instead of a centre seal, and windows that can also open outwards. The Uf is 1.10 against 0.89 here. Choose the Slim if you want a window that opens outwards, top-hung or bottom-hung.

Salamander bluEvolution 82 MD. Also a German profile with a centre seal and 6 chambers, with almost the same frame depth: 82 mm. It takes thicker glass, up to 60 mm against 52 mm, and is wider in view: 123 mm against 119 mm. The Uf is 0.98 against 0.89.

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 Gealan S 9000 MD profile All about the inward-opening casement layout