Windows and or sliding glass door replacements with the same net openable area. (replacement windows must meet state of california energy code requirements for u-factor and shgc for package d of the applicable climate zone (see pds #409). Also, per county building code 704a. 3. 2. 2; windows shall be dual-glazed with a minimum of one tempered pane, and glazing frames made of vinyl shall have welded corners and metal reinforcing in the interlock area.)