Single Seal Spacers

Quanex offers a full line of single-seal spacer products designed for optimal performance in high-volume production of dual- and triple-pane insulating glass. Our single-seal warm edge technologies are unique to the industry because of the breadth of our offering and the production and performance benefits they provide.
Learn more about these single-seal technologies from Quanex:


Unique Composite Laminating Technology preassembled with proven components.


Patented design that offers efficiencies for high-volume IG production.


All-in-one seal and spacer that accommodates and supports the center lite of glass or decorative panel.

Edgetherm® FS

Proven 100% solids extrusion of a quality thermoplastic compound for added flexibility.

Rigid Spacers

Rigid Spacers