altherm™ windows / bi-fold

For dramatic opening, Altherm™ bi-folds are a great option. They can be built in a range of configurations - all capable of stacking to one end of the frame.

The innovative lay-back bi-fold allows clear decks, with panels folding flat against walls. This option is available in 2-panel and 2+2 configurations. No special detailing of the lintel is required - they are installed like any other bi-fold.

View Bi-fold configurations

• hardware options
• glass options
• colour options