2750 and 3750 Multi Slide Door
Win-Dor’s innovative, durable, and low-maintenance 3750 Series multi-slide door system is considered among the highest quality multi-slide doors in America. Win-Dor’s multi-slide doors are extremely energy efficient, very strong, and structurally sound. Their unique blend of rigid aluminum framing with long-lasting, low-maintenance vinyl capping creates a unique combination not available from other manufacturers.

3750 offers a very clean look with a 3 3/4” x 1 3/4” sash.
2750 offers a slightly slimmer frame with a 2 3/4” x 1/3/4” sash that will allow for more glass and light.

3750 Folding Door Technology

Unlike other manufacturers who solely use aluminum, vinyl or wood when manufacturing their folding door systems, Win-Dor has combined both vinyl and aluminum to offer our customers something special.

The positives and negatives of an all aluminum folding door system

Aluminum is a great material for bifold door systems. It is strong and rigid. It allows for larger sized installations vs. the traditional vinyl bifolding door system. At the same time, there are several drawbacks to a standard aluminum door system. Just like aluminum windows, it eventually corrodes and breaks down. Secondly, aluminum is great at transferring energy. Because of this, an aluminum bifold system will not be as energy efficient.

The positives and negatives of an all vinyl folding door system

Vinyl is also a great material for bifold door systems. Unlike aluminum, vinyl will never crack or peel. It won’t corrode. In fact, vinyl bifold doors require very little maintenance. And just like vinyl windows, vinyl bifolds can be incredibly energy efficient.

But just like its aluminum counterpart, there are drawbacks with vinyl. A bifold door system made exclusively from vinyl doesn’t have the same strength as an aluminum bifold door system. And because of this, the size of the opening is extremely limited, especially for larger residential and commercial applications.

3750 Swing Door System
Win-Dor’s innovative, durable and low-maintenance swing door system is considered among the highest quality swing doors in America. WinDor’s Swing Door combines a contemporary vinyl sash with aluminum reinforcement, allowing for a durable, yet low maintenance, affordable high-quality swing door system that will create a grand focal point in any room. Win-Dor’s 3750 Swing Door offers a 1 3/4” x 3 3/4” sash profile.

2750 and 3750 Exterior Folding Windows
As folding doors become more and more popular, some of customers asked about windows to match. Win-Dor delivers. They use the same proven platform to make their hybrid folding windows. And unlike other manufacturers who solely use aluminum, vinyl or wood when manufacturing their folding window systems, Win-Dor combines both vinyl and aluminum to offer our customers something truly unique.