// Parts Catalog
EXTENSION SPRING 7FT — CH-TS03-7′
High-carbon steel extension spring for 7-foot door height. Available in black or galvanized. Supplied in left and right wound pairs for standard residential extension spring systems.
Specifications
| Type | Extension Spring |
| Door Height | 7ft |
| Surface | Black or galvanized |
| Material | High-carbon steel |
| Winding | Left and right pairs |
| Application | Standard residential extension spring systems |
Spring & Shaft Series
CH-TS03-7
CH-TS03-7′ Extension Spring
High-carbon steel extension spring for standard residential garage doors with 7-foot door height. Available in black or galvanized finish. Supplied in matched left and right wound pairs for balanced door operation. Designed for standard residential extension spring systems requiring reliable, consistent spring force across the door cycle.