A closed vinyl multi-slide door shows access to an outdoor seating area.
A half-open, 90-degree vinyl multi-slide door connects the dining room to the backyard patio.
A closed, 90-degree vinyl multi-slide door shows access to an outdoor seating area with a fireplace.

Series 3700 Multi-Slide Door

The Series 3700 Vinyl Multi-Slide Door is not only our most economical solution for indoor-outdoor living, but it also boasts several key features that make it stand out from other options on the market. While narrow sightlines and wide glass panels offer a sleek, modern aesthetic, the door has been designed for optimized installation and the ease of operation Western Window Systems is known for. With the value and efficiency of vinyl, it’s a low-maintenance alternative that brings style and flexibility to your design.

  • Clean design with narrow sightlines and wide glass panels
  • AAMA- and NFRC-tested and certified
  • Integrated weep system with 1.5″ sill height
  • Low-E, dual-paned, argon-filled glass from Cardinal IG
  • A .29 U-factor for energy efficiency

Sill Option

Standard Sill

A “floating” sill track insert gives the Series 3700 Vinyl Multi-Slide Door superior rolling performance, making it highly adaptable to a variety of flooring substrate conditions. Includes an integrated weep system.

Handles and Locking

Flush-Mounted Handle

The narrow design of the Series 3700’s flush-mounted handle allows panels to easily slide past each other.

Standard Handle

The standard handle is color matched to the frame.

Finish Options

Standard frame colors are white or almond. An optional black capstock on the panels and frame finish incorporates hybrid technologies that provide a high level of color stability and low heat gain capabilities.

For material samples, contact a Western Window Systems representative.

Screen Options

A panel screen option offers an economical solution for pest control, using a unique dual-sill track and head track within our standard door frame.


Technical Resources

  • Product Data Sheet (Coming Soon)
  • Specifications (Coming Soon)
  • CAD Details

Additional Information

A uniquely shaped home with numerous sliding glass doors.

Energy Efficiency and Sustainability

Good for you and the planet

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Two employees measure an installed sliding door panel.


See how it’s done

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How They’re Made

Built and tested to last.

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Contact Information


Project Information

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