Glossary / dual-pane

dual-pane

Two or more lites in one window unit. Oregon R327 treats multilayered glass as one glazing option. It is not the same as tempered glass.

Last verified 2026-08-23. JSON (CC BY 4.0)

Also called: multilayered glazed panels.

Do not use as a synonym: fire-rated window.

Related

• tempered
• r327
• cwuic
• windows
• sfm-12-7a-2
• Dual-pane versus tempered windows

Where this term is used

16 guides use this term.

• California AB 38 seller disclosure
• Colorado CWRC versus Oregon R327 versus California CWUIC
• Deck railings in the WUI
• Dual-pane versus tempered windows
• Ember versus flame versus radiant heat
• Garage doors as an ember path
• IBHS does not replace adopted code
• Oregon R327 versus California CWUIC

All guides →