Model # SL728-C

Internet #205511056

null SL728 28 in. Lock-End Extension Spring (0.177 in. No. 7 Wire)
0856022005147

SL728 28 in. Lock-End Extension Spring (0.177 in. No. 7 Wire)

$23.01 /each

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Product Overview

The E900 HARDWRARE SL728 28 in. Lock-End Extension Spring is a Holmes spring replacement for most one-piece garage doors. 2 x SL728 springs can handle up to a 150 lb. door while 4 x SL728 springs can handle up to 300 lb.s. SL728 springs are also a popular installment for lifting toy hauler doors.

  • 2 x SL728-C springs support 90 lbs. to 150 lbs. garage doors
  • 4 x SL728-C springs support 150 lbs. to 300 lbs. garage doors
  • Length over coils: 28 in.
  • Outside diameter: 1-5/16 in.
  • Wire gauge: (0.177) #7
  • Initial tension: 110-120
  • Maximum allowable stretch: 18.5 in.
  • Manufacturer warranty: 1-year

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Customer Questions & Answers

Does the SL728 28 IN. LOCK-END EXTENSION SPRING include a safety cable?

Asked by: rm61
It doesn't have or need a safety cable. It has interlocking safety links inside the spring that prevent a broken spring from coming loose or becoming a projectile.
Answered by: GarageGuy
Date published: 2017-03-22

My old broken Holmes garage door spring was designated "SL728C". Is the "C" important because yo...

My old broken Holmes garage door spring was designated "SL728C". Is the "C" important because you only offer only the "SL728" without a "C".
Asked by: Springcaput
This is the SL728 - C.
Answered by: CommunityAnswer
Date published: 2017-03-19

the yellow paint on my springs?

what dose it mean,is it relivent?? also there is no c on my model SL728,dose this mater??
Asked by: fred
The paint indicates which side of the spring is the top hook (vs. bottom). The SL728 is the correct part number.
Answered by: HolmesHally
Date published: 2016-02-16
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Customer Reviews

SL728 28 in. Lock-End Extension Spring (0.177 in. No. 7 Wire) is rated 4.8 out of 5 by 10.
Rated 3 out of 5 by from Just garage door springs but to get My garage door was getting harder to lift. I wanted wanted to buy new springs but fould HD only sells them on the web for home or store delivery...no one at local store knew why. Store delivery was quick. No instructions came with springs but found limited instructions online. It appears DYIer's are not encouraged to change springs
Date published: 2016-10-05
Rated 5 out of 5 by from I needed to replace the 2 springs on one side... I needed to replace the 2 springs on one side of my cool old school wooden garage door that broke . The springs take a bit of strength and make sure the door is fully open during installation. After adjustment my garage door works perfect!
Date published: 2017-01-26
Rated 5 out of 5 by from Exact P/N replacement for the 40+ year old originals. Glad to see they're still in business. If ... Exact P/N replacement for the 40+ year old originals. Glad to see they're still in business. If they last as long they're a bargain. A little tricky to install but they work perfectly.
Date published: 2017-03-21
Rated 5 out of 5 by from These springs replaced springs installed on our garage door 47 years ago .... they are equivalent... These springs replaced springs installed on our garage door 47 years ago .... they are equivalent to the original springs .... excellent product and excellent value!
Date published: 2017-02-21
Rated 5 out of 5 by from Just what the Doctor ordered! Everything works great and the price was right. Just what the Doctor ordered! Everything works great and the price was right.
Date published: 2016-11-02
Rated 5 out of 5 by from Good price. Good product. Fast delivery. Highly recommend. Good price. Good product. Fast delivery. Highly recommend.
Date published: 2017-03-08
Rated 5 out of 5 by from Garage door spring Does the job! Works great! Would recommend this product.
Date published: 2017-01-03
Rated 5 out of 5 by from All as promised. Easy to install! Works great! All as promised. Easy to install! Works great!
Date published: 2016-10-26
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