The windows of IDEAL 4000 Round Line system join the latest technology with above-average style. Their 70 mm depth of assembly and five-chamber structure give optimum heat protection and restful silence in your house or apartment. Further, their rounded shapes underline their special style and harmonious look.

The most important characteristics of the system are as follows:

* Assembly depth together with suitable glass packet will assure you salutary silence
* Shift of an axle of hardware notch gives optimum protection against burglary
* Five-chamber structure makes these windows perfectly heat protected and by this lets you decrease your energy bills.
* With its rounded lines, windows are modern an harmonious

Technical solutions:

* 15° scarf for better drainage of water out of the window
* Rounded lines that make windows look harmoniously and updated
* Five-chamber structure and 70 mm depth of assembly will assure optimum sound and heat insulatiom
* Hidden, not visible glass seal
* Large strehnghten chamber makes it possible to use steel strengthenings which guarantee good static characteristics
* Special shape that makes assembly easier and water drainage more efficient
* 8-mmm covering of a frame by a leaf results in very good sealing