3-3/4" Torsion Spring | .243 Wire Size
3-3/4" Torsion Spring | .243 Wire Size
This Egyptian coated torsion spring has an inside diameter of 3-3/4 inches and is used mainly on commercial and heavy residential garage doors. The green paint indicates a wire size of .243.
Comes installed with 3-3/4" cast aluminum stationary and winding cones.
To find your wire size, measure 20 coils and divide by 20. Matching the paint color is a good double check, but it should not be your only deciding point.
Measure spring length on the coils only. Do not include the end plugs/cones in this measurement.
Wind is the direction the coils wrap. Compare your old spring to the left wound and right wound photos above to make sure you order the correct one.
If you have any questions or concerns, shoot us an email or use the chat feature below and ask for a representative.
Inside Diameter - The inside diameter may be embossed on the winding cone. If not, carefully measure the diameter from inside wire to inside wire.
Wire Size - Measure the length of 20 coils in Inches. Divide the length by 20. The result will be your coil size. Double check using the color code chart below.
Example: 5 Inches/20 Coils = .250 Wire Size
Length - With the spring unwound, measure the full length (wire only) from first coil to last coil to the nearest inch.
Torsion springs are the most common counterbalance system and used on the majority of garage door brands.
Most customers purchase the exact replacement springs on their door.
It is best practice to replace both springs if you have two springs. If one spring has broken the other will likely break soon as well.
How to Install Torsion Springs
Tips, Tricks, and Reminders when replacing your springs.
Confirming Wire Size
It is best practice to verify wire size by first measuring using a wire gauge or counting 20 coils.
Measurue the length of 20 coils in Inches. Divide the length by 20. The result will be your coil size. Double check using the color code chart provided.
Example: 4.5 Inches / 20 Coils = .225 Wire Size
