... , Window closed: Good watertight and air permeation resistance. Economic and reasonable ... Glass: Double or triple glass(tempered glass, figure glas, frosted glas, coated glass, low-e glass, tinted glass etc) Hardware: Tilt-turn ... system. R OTO, SIEGENIA OR China hardware etc(Europe standard channel) Sealant: EPDM, PVC, SILICONE ETC aluminum tilt&turn window ...