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Garage Door Extension Spring Lift And Containment Kit w/ Hardware
Details
Garage Door Extension Spring Lift And Containment Kit w/ Hardware
Get your garage door running like new again by using this kit and a new set of springs.
Included In This Kit:
- (4) 3" Pulleys
- (4) 3/8" Red Coated Nuts
- (1) Pair 1/8" Spring Cables
- (1) Pair 1/8" Safety Cables
- (2) 3-Hole Cable Lacing Plates
- (2) S Hooks
- (2) 5/16” Eye Bolts
- (4) 5/16” Red Coated Nuts
- (2) 3" Fork /w Cable Restraint
Replacing the pulleys at the time the spring breaks on your garage door makes the door operate smooth and like new again. The photo shows the actual kit.
More Information
| SKU | 525-50010 |
|---|---|
| UPC | 302707370364 |
| Manufacturer | Canimex |
| Prop 65 | ⚠ WARNING: This product can expose you to chemicals including lead, which is known to the State of California to cause cancer or birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov |
| Wire Size | .192 Orange |
| Spring Length | 17.750 |
Questions 1
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#1 Customer asks
My garage door is 7.5 ' high, so I assume that I order the springs for an 8' door? Also, is between 160 - 170 lbs, so order for 170 lbs? I need an answer so I can order asap. Thanks.
262 people already voted for this question.
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Great question — and one that comes up a lot. Here's the straightforward answer:
Door Height → Spring Length:
Yes, for a 7'5" or 7'6" door, you'd use springs rated for a 7-foot door, not 8-foot. Extension springs are matched to the door height, and a 7.5' door falls into the 7' spring category. Using 8' springs would result in springs that are too long and won't cycle correctly — they'd be under-stretched at full open, providing insufficient counterbalance.
The reason: extension springs for a 7' door have a stretched length that accommodates doors up to about 7'6". An 8' spring is designed for doors 7'7" to 8'0".
Actually — let me clarify, because this can vary by manufacturer. The general industry standard:
7' door → 25" long springs (unstretched)
8' door → 27" long springs (unstretched)
The easiest way to confirm is to measure the existing springs while the door is closed (springs fully extended). That measurement will tell you exactly which length you need.
Door Weight:
For weight, you always want to round UP to the next available weight rating. So yes, if the door weighs between 160–170 lbs, ordering springs rated for 170 lbs is correct. Under-rating the springs means they'll be overstressed and fail prematurely. Going slightly over on the weight rating is always safer than going under.
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