Features:

1.Wood:Canadian Hemlock,American Oak,Russian Larch or Malaysian Meranti.The scantling(which was used to make the frame and sash) is defect-free,no unsound knot,decay,crack,worm hole allowed.Every single grain on the surface must be straight.Absolutely innoxious glue(EN D4 standard) used to produce the scantling.Advanced processing machines used to process the wood,which makes the technique more precise.

2.Hardware:ROTO or SIEGENIA from Germany.Tilt-turn performance available.

3.Paint:REMMERS paint from Germany,absolutely innoxious paint which is environmental friendly.Perfect touch feeling and looking.Good anti-UV and waterproof performance

4.Glass:Double or triple glazing;float,tempered or bullet-proof glass;low-E coat,argon gas available.Could be decorated with 3 layer simulated divided lites,various styles.

5.U value:U value:1.5-2.1 W/(m2*K);R value:30db<Rw>35db.

6.Perfect wind pressure resistance,Air permeability,Rain Leakage resistance property.

7.Packaging:Wrapped with carton board and PVC film,then loaded into the fumigated wooden case.