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  1. Trailer Door Hinges
  2. Polar Hardware
  3. Piano Hinge
  4. Continuous Hinge
  5. Steel
  6. 84 Inch Long
3" Wide Continuous Hinge - 7' Long - Steel

3" Wide Continuous Hinge - 7' Long - Steel

Item # PLR843
Our Price: $138.97
Trailer Door Hinges
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Shipping Weight: 15 lbs
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Great for your heavy-duty utility trailer, this piano hinge provides uninterrupted support for your door or tailgate. The hinge rotates 270 degrees and contains no pre-drilled holes, so it can be welded or drilled to match your setup. Great Prices for the best trailer door hinges from Polar Hardware. 3" Wide Continuous Hinge - 7' Long - Steel part number PLR843 can be ordered online at or call 1-800-940-8924 for expert service.
  • All Info
  • Reviews (13)
  • Q & A (0)
  • Videos (1)
  • Photos
  • Why etrailer?

Polar Hardware Trailer Door Hinges - PLR843

  • Piano Hinge
  • Continuous Hinge
  • Steel
  • 84 Inch Long
  • 3/8 Inch Diameter
  • 3 Inch Wide
  • Weld On
  • Bolt On - No Pre-Drilled Holes
  • Polar Hardware

Great for your heavy-duty utility trailer, this piano hinge provides uninterrupted support for your door or tailgate. The hinge rotates 270 degrees and contains no pre-drilled holes, so it can be welded or drilled to match your setup.


  • Hinge provides sturdy, continuous support for the door or tailgate on your utility trailer
  • Continuous design offers more support than smaller, individual hinges and reduces stress on heavier doors
  • 270-Degree rotation for full opening and closing motion
  • Weld-on or bolt-on installation
    • Bolt-on installation requires drilling holes into hinge
  • 16-Gauge steel construction is durable and long-lasting
  • Made in the USA


  • Dimensions: 7' long x 3" wide
    • Each side of the foldable hinge measures 1-1/2" wide
  • Individual knuckle length: 2"
  • Pin diameter: 3/8"

843 Polar Hardware Piano Hinge - Steel - 3" Wide - 84" Long

Video of 3" Wide Continuous Hinge - 7' Long - Steel

Videos are provided as a guide only. Refer to manufacturer installation instructions and specs for complete information.

Video Transcript for Review of Polar Hardware Trailer Door Hinges - 7 Foot Long 3 Inch Wide Steel Hinge - PLR843

Hi there, I'm Michael with Today, we're gonna take a quick look at the 7-foot-wide by 3-inch-wide continuous steel hinge. This is a piano hinge that's gonna provide a sturdy, consistent support for your door or tailgate on your utility trailer. The continuous design is gonna offer more support than your smaller individual hinges and it's gonna help reduce the stress on your heavier doors. Now, this is 7 feet wide by, or 7 feet long by 3 inches wide, you can see if I get this to stand up properly, it's about 3 inches wide. It is going to have the two sides that will each fold in, does have 270 degrees of rotation for your full opening and closing, so it'll give you plenty of adjustability there so that you can open your door properly.

Each side of the hinge is about 1 1/2 inches in width there, so combined for that 3 inches. This is a 16-gauge steel construction, so it is gonna be very durable and long lasting. You can either weld this on or bolt it on. It is a solid metal, so there's no pre-drilled holes. So you can drill out your own holes to match your setup.

Our individual knuckle links here, we're looking at right at 2 inches and our pin diameter is 3/8 of an inch. This is made here in the USA, so you can trust it's made to the high quality standards that we've come to know and trust for products that are made here in the U.S. So if you are needing a 7-foot-long by 3-inch-wide continuous hinge, this is gonna be a great option for you. That completes our look for today. Again, I'm Michael with

Thanks for watching..

Customer Satisfaction Score:

Customer Reviews

3" Wide Continuous Hinge - 7' Long - Steel - PLR843

Average Customer Rating:  4.8 out of 5 stars   (13 Customer Reviews)

Great for your heavy-duty utility trailer, this piano hinge provides uninterrupted support for your door or tailgate. The hinge rotates 270 degrees and contains no pre-drilled holes, so it can be welded or drilled to match your setup.


I was nervous about purchasing a hinge that was cheap and to flimsy for my application. This companies products are every thing they say they are. Very heavy well made hinge. You woun't be dissatisfied with you purchase


The product was as advertised and just what was needed to fix the back drop-down trailer door. The shipping was fast and arrived the day they said it would. Will order from the company again when needed. Thank you for your great service.


Great Continuous Hinge! Very Heavy Duty, should do the job well! I have ordered before from E-Trailer and I am pleased. Thanks!


Very heavy duty and should last for two or three hundred years. (well beyond the 18 years the factory original lasted)


All in all this has been a good product. Don't know why, but it has a tendency to rust if you don't keep oil on it. Does what I bought it for.


As always you have done what you said you would when you said you would ,and at a fair price. Can’t ask for more than that. Thank you


Took a while to find the right part in stock but Kevin did keep me informed as to what was going on.



Exactly what I needed






See what our Experts say about this Polar Hardware Trailer Door Hinges

  • Replacement 8 Foot Long Trailer Ramp Door Hinge Option
    I took a look at what we have, and the closest I was able to find to what you need is the: -3" Wide Continuous Hinge # PLR843. This is a continuous hinge that measures 7' (84") long, and is 3"wide. Consequently, we also carry the: -5" Wide Continuous Hinge # PLR844, which has the 96" length you need, however this hinge is 2" wider at 5".
    view full answer...

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Info for this part was:

Employee Amanda M
Written by:
Amanda M
Employee Mike S
Updated by:
Mike S
Employee Michael B
Installed by:
Michael B

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