
Our windows have superior performance that starts with innovatively engineered components that provide the basis for superior energy savings. The multi-chamber design of our windows helps trap dead air to produce an effective insulating barrier, while fusion-welded frames and sashes provide superior structural strength and create a permanent barrier against air and moisture infiltration. A special multi-layer weather stripping and a superior sash interlock system offer additional barriers to air infiltration adding up to a greater energy savings – and lower utility bills.