Eco Aluminium - SMARTIA M9660 Phos / Hinged insulated system Performance: WATER TIGHTNESS: Class 7A (300Pa) AIR PERMEABILITY:CLASS 4 WIND LOAD RESISTANCE: C3/B3 Characteristics: UF: from 2,5up to 3,6 W/m²K SASH WEIGHT:
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Airtightness Standards And Testing Explained | Paul Heat Recovery
Airtightness Standards And Testing Explained | Paul Heat Recovery
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