The panels on the AX450 are engineered to stack upon each other when fully open, giving the homeowner an even larger opening to the outside. The enhanced space helps fully merge the interior with the exterior.

Exhibiting the latest in engineering technology, stacking patio doors stack on top of each other as you open them, producing a large opening that seamlessly blends the interior with the exterior. These stacking doors are easy to operate and feature state-of-the-art hardware.