Constant force balances sash weight for easy opening, never needs adjustment.
Positive interlock, with dual weather strip, assures a tighter seal at the meeting rail providing an additional air barrier resulting in less heat loss
Lower sash operates and tilts in for easy cleaning
Triple weather seal on sash to create a continuous high performance barrier against the elements
Positive interlock, with dual weather strip, assures a tighter seal at the meeting rail providing an additional air barrier resulting in less heat loss
Permanently fusion welded main frame and sash adds exceptional strength and durability