Internorm windows are known for greatest thermal performance. Outstanding factor for this, is the HCFC-, HFC- and FC-free insulation which is inserted into frame profiles.
UPVC/Aluminium window types: KF410 and KV440 can be insulated by using high pressure to insert i-tec insulation granulates in to the frame core.
- Superb thermal insulation
- Gapless chamber filling
- Granulate instead of foam
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