| Dependable and Durable! Alterna II, R-6.6 polystyrene insulated steel door. The Alterna II is a 2-inch thick (50 mm) polystyrene insulated steel door with classic raised panels (CC) and an R-6.6 thermal insulation factor. It is available in four colors and covered by a 15 year limited warranty. 
Alterna, non-insulated steel door. A non-insulated 2 inch thick steel door with classic raised panels (CC), the Alterna is ideal for garages with minimal insulation requirements. It is available in four colors and covered by a 15 year limited warranty.  Panel Styles and Colors Available Colors | | | | Ice White
(QC-7207 | Metro Brown
(QC-8228) | Desert Sand
(QC-8142) | Claystone
(QC-5977) |
Note: The colors shown on this page are as exact as printing techniques will allow. Please request an actual color sample. Panel Styles  | Classic raised panels (CC) |
Windows Made of ⅛ in. (3 mm) plain glass with a synthetic resin frame that won't fade. Garaga decorative windows give your door an attractive appearance. The Alterna Series doors are available with plain glass windows (21 in. X 13 in.) with or without plastic inserts. Several insert designs are available: Williamsburg, Stockton, Cathedral, Sherwood. | | Plastic Inserts | Clear Glass |
Number of windows (21 in. X 13 in.) Width (ft.) | 8 | 9 | 10 | 12 | 14 | 16 | Number | 4 | 4 | 5 | 6 | 7 | 8 |
Main Components 
Dimensions | Alterna II
Alterna | Width | 5 ft., 8 ft., 9 ft., 10 ft., 12 ft., 14 ft., 16 ft. | Height | 6 ft. 6 in. to 8 ft.
in 3-in. increments (4 sections) |
Also available: 9 ft. and 10 ft. heights to allow passage of RV's. Contact Stateline Doors to place your order today at 860-851-9980
| 
