Elevate your garage door's performance and safety with GarageDoorProject® Premium Extension Springs. As a proud US vendor, we exclusively partner with 100% OEM US manufacturers and suppliers, ensuring top-notch quality. Our springs, crafted from high-grade US steel, are designed for 7 ft. and 8 ft. tall garage doors, offering a precise fit and optimal performance. Sold in pairs, these 10,000-cycle springs with double loop ends prioritize safety, providing a secure and smooth operation for your garage door. Key Features: Durable Construction: Engineered with precision, our extension springs are made from high-grade, oil-tempered US steel, offering robustness and longevity. The 10,000-cycle design ensures reliable performance over time. Precision Engineering: Meticulously calculated for the ideal balance between tension and extension, our springs guarantee smooth and controlled door movements, reducing stress on the opener and enhancing overall performance. Safety First: Safety is paramount. Our extension springs include safety containment cables, preventing uncontrolled spring movements and minimizing the risk of accidents. How They Work: Garage Door Extension Springs operate by creating tension to counterbalance the door's weight, providing ease of operation and reducing strain on the opener. Installation: Follow these steps for a manageable DIY installation: Safety First: Ensure the garage door is closed and disconnected from the opener, releasing any existing tension in old springs. Measurement: Measure existing springs to determine the correct replacement size. Remove Old Springs: Carefully remove old springs, paying attention to setup and safety cables. Install New Springs: Attach new springs to the pulley system, following manufacturer instructions for proper installation and tension adjustment. Safety Cables: Attach safety containment cables to prevent spring breakage accidents. Test & Adjust: Test the door's operation and adjust tension if needed for the right balance. Invest in the longevity, safety, and reliability of your garage door with GarageDoorProject® Premium Extension Springs. Experience the peace of mind that comes with a smoothly operating and secure garage door. Upgrade today for enhanced performance and safety! FEATURES: USA Manufactured: High-quality US steel. Sold in pairs. GDP Exclusive: 10,000 Cycle Springs with Double Loop Ends for Safety. Precision Engineered: Commercial-grade steel, field-tested for reliability. Tailored Options: 25" length with 42" stretch for 7' tall doors; 27" length with 48" stretch for 8' tall doors. Consider door weight for accuracy. Safety First: Always use safety cables for added security during installation and operation.