{"id":"tempered","license":"CC-BY-4.0","data":{"term":"tempered","shortDef":"Glass heat-treated so it resists breaking better than annealed glass. California CWUIC wants at least one tempered pane in dual-pane units. Tempered is not dual-pane.","alsoCalled":["tempered glass"],"relatedGlossary":["dual-pane","r327","cwuic"],"relatedCategories":["windows"],"relatedStandards":["sfm-12-7a-2"],"relatedGuides":["dual-pane-vs-tempered"],"author":"grayson-graham","reviewStatus":"draft","lastVerified":"2026-08-23T00:00:00.000Z"}}