Garage Door Extension Springs 32" X 48" for 8' High Doors

Extension Springs from North Shore Commercial Door counterbalance the weight of an 8 foot tall overhead door to make opening and closing safer and easier. Extension springs install with a heavy duty S-Hook to the stationary brackets that hang horizontal tracks from the ceiling, while the other end of the spring is connected to a safety cable-and-pulley assembly installed on the garage door. As the torsion springs, cables, and cable drums open the door, the springs retract to help the garage door opener lift the door upwards onto the horizontal tracks. As the door closes the springs extend to lighten the load of the door and allow it to lower slowly. When in the open position, the initial spring tension holds the door in place on the horizontal tracks. Garage Door Extension Springs are color coded by door weights ranging from 40 pound doors to 380 pound doors. For a complete list of garage door extension springs for 7 foot, 8 foot, 9 foot, 10 foot, 11 foot, and 12 foot tall doors Click Here. Product Highlights:

• Replacement springs for 8 ft. tall garage doors
• Extension spring systems require two equal strength springs; Sold by the pair
• Makes closing and opening the garage door safer and easier
• Uses a sheave pulley system to transfer the weight of the door to the springs
• High quality new springs to replace old springs for garage door repair and home improvement
• Spring manufacturers color code by weight to ensure the correct springs are selected
• Door weights from 50 to 280 lbs
• Springs are color coded by weight
• Springs extend as the door closes, retract as the door opens
• Initial spring tension holds the door open

Determine the door weight and door height: 1. The pull weight of an extension spring is determined by the color code found on the end of the spring. See Chart Below. 2. Measure door the height. 3. Springs are only sold in pairs. If you cannot determine the color code, it will be necessary to weigh the door. To Weigh Your Door: 1. Raise door completely. Disconnect power and lifting arm of garage door opener. 2. Fasten "C" clamps or vice grips under bottom rollers to retain door. With tension completely off extension springs, disconnect springs from track support. 3. Remove "C" clamps or vice grips and lower door by hand. Note that entire weight of door, which could exceed several hundred pounds, has to be lowered slowly by hand so more than one person is needed. 4. Set bathroom scale to zero and place under center of door and record door weight. 5. If door weight exceeds capacity of the scale, use 2 bathroom scales. Add a 2 x 4 with one end on one scale and the other on a second scale with the door perpendicular to the 2 x 4. Add the respective weight from each scale together to get the total weight of the garage door. DASMA Spring Color Codes: EXTENSION SPRINGS:

• 40 lbs - BLUE
• 50 lbs - RED
• 60 lbs - BROWN
• 70 lbs - ORANGE
• 80 lbs - GOLD
• 90 lbs - LIGHT BLUE
• 100 lbs - TAN
• 110 lbs - WHITE
• 120 lbs - GREEN
• 130 lbs - YELLOW
• 140 lbs - BLUE
• 150 lbs - RED
• 160 lbs - BROWN
• 170 lbs - ORANGE
• 180 lbs - GOLD
• 190 lbs - LIGHT BLUE
• 200 lbs - TAN
• 210 lbs - WHITE
• 220 lbs - GREEN
• 230 lbs - YELLOW
• 240 lbs - BLUE
• 250 lbs - RED
• 260 lbs - BROWN
• 270 lbs - ORANGE
• 280 lbs - GOLD
• 290 lbs - LIGHT BLUE
• 300 lbs - TAN