"I" Style-Insulated

A patented variation of the proven "S" style door. Increased frame thickness provides a full insulated thermal break across the entire opening for a truly efficient door. Also includes an upsized opener and foam weather seal kit. The industries first door designed specifically for insulated applications.

Start saving on those monthly heating bills with a tight fitting, fully insulated bi- fold door. The patented design provides a complete thermal break across the entire clear opening, not just between the framing members which is typical of other bi-folds. And best of all, it´s virtually no more work to install.

How it works:

Diamonds insulated bi-fold door is unique in that it is constructed so that the outer perimeter is thicker than the remainder of the door. This creates a gap between the door frame and the exterior cladding across the entire face of the door, including the center hinge area. This gap can be filled with your choice of insulation to produce a truly efficient insulated door system.

If you have an insulated shop, or may be planning on insulating in the future, the "I" style bi-fold door is right for you. Diamonds insulated bi-fold comes with a robust, thickened perimeter frame, and an upscaled opener to accommodate the added weight of insulation and possible interior liner. Our weather seal package is also included to provide a tight seal between the door frame and the building jamb, and along the center hinge area. Not only is the "I" style door a truly efficient design, but also provides a clean interior appearance.