pvc window-3000 series America style single hung w

1. Multiple weather stripping provides remarkable air tightness, reducing heating and air conditioning costs. 2.Interior glazing bead design constitutes a key security feature, allowing the window to withstand 350 km/h (220 mph) winds. 3.Our windows have the highest number of internal chambers, lending them outstanding insulation and sound abatement qualities, as well as thermal efficiency and increased strength. 4.Warm edge technology and high performance insulating glass result in energy savings. 5.Spiral balance hardware provides long lasting, consistent ease of operation. 6.The double walls of the sash give it increased sound abatement qualities and added strength.