Call 800-298-8924 to order Polar Hardware enclosed trailer parts part number H300 or order online at Free expert support on all Polar Hardware products. Guaranteed Lowest Price and Fastest Shipping for 3" Wide Continuous Steel Hinge, 6' Long. Enclosed Trailer Parts reviews from real customers.
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Price: $39.62

3" Wide Continuous Steel Hinge, 6' Long

Item # H300

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Our Price: $39.62

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Polar Hardware Enclosed Trailer Part
Polar Hardware Enclosed Trailer Part
Polar Hardware Enclosed Trailer Part
Polar Hardware Enclosed Trailer Part
Polar Hardware Enclosed Trailer Part
Polar Hardware Enclosed Trailer Part
Polar Hardware Enclosed Trailer Part
Polar Hardware Enclosed Trailer Part
Polar Hardware Enclosed Trailer Part
Polar Hardware Enclosed Trailer Part
Polar Hardware Enclosed Trailer Part
Polar Hardware Enclosed Trailer Part


  • Doors
  • Door Hardware
  • Hinge
  • Continuous Hinge
  • Polar Hardware
  • 72 Inch Long
  • 3 Inch Wide

Polar Hardware Enclosed Trailer Parts - H300

Also called a piano hinge. All continuous hinges rotate 270 degrees, measure 6' in length and come with no holes, making it easy to either weld or drill to specification.


  • Mild steel construction
  • Rotates 270 degrees
  • No pre-drilled holes - easy to weld or drill to match application


  • Flat width: 3"
  • Pin size: 1/4"
  • Gauge: 0.074"
  • Knuckle length: 1"

836 3" Wide Continuous Steel Hinge, 6' Long

Value - This item

3" Wide Continuous Steel Hinge, 6' Long

3" Wide Continuous Steel Hinge, 6' Long
Polar Hardware Enclosed Trailer Parts

45 reviews

Code: H300


Our Price: $39.62

  • Enclosed Trailer Parts
  • Doors
  • Door Hardware
  • 3 Inch Wide
  • Hinge
  • 72 Inch Long
  • Continuous Hinge
  • Polar Hardware
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  • Door Lock
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  • Blaylock Industries

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Video of 3" Wide Continuous Steel Hinge, 6' Long

Videos are provided As a guide only. Refer To manufacturer
installation instructions And specs For complete information.

Video Transcript for Polar Hardware Enclosed Trailer Parts H300 Review

Today, we're going to be taking a look at the 3" wide continuous steel hinge. It's going to measure 6' long. This is also called a piano hinge. These type of hinges are used for a variety of applications. You'll find them on tool boxes, different types of flaps, and they are commonly used for trailer ramp doors. Now, this one in particular is made from a mild steel construction. It is strong and durable, and it will resist rust and corrosion.

It's not going to do as great of a job as stainless steel, but it's still going to do a good job. It's still a nice design, mild steel. The unit's going to rotate 270 degrees, so it's going to allow for full opening. I do want you to notice that there's no predrilled holes on the unit. What that does is it makes it easier for welding applications, and it makes it easier to kind of customize it for your application.

That way, you can drill out the holes where you need them to best fit your particular application. Right now, the hinge is completely flat. If we take a measurement of that in this position, edge-to-edge, that's going to measure 3" wide. The internal pin size . There going to be a that runs right through all these knuckles here. That pin's going to give us a diameter of 1/4".

The gauge of steel that the hinge uses for its construction is 0.074". Then the over all length of the unit, measuring from edge to edge, is right on 72" which again is going to measure 6' long. Now this can be cut to fit your need. You can cut it anywhere along. I do recommend cutting right between where the knuckles separate. The knuckle links, that's each one of these pieces right here.

The knuckle links on the unit's going to be 1" long. That's going to do it for today's look at the 3" wide continuous steel hinge that measures 6' long.

Customer Reviews

3" Wide Continuous Steel Hinge, 6' Long - H300

Average Customer Rating:  4.8 out of 5 stars   (45 Customer Reviews)

- H300

by: Bob wotherspoon06/17/2015

Received item earlier than anticipated, perfect just what I needed. Will order from you folks again if i need any trailer items. Thanks 204100



Bob w - 06/16/2016

- H300

by: Gary C.08/30/2013

Very good product fast shipping thank y ou 97725


The trailer door hinge is working just find. Thank you Gary C

Gary C - 09/01/2014

- H300

by: Arlan Blazek09/23/2014

Just what I was wanting to make a foldout ramp for my new H & H cargo trailer. 152666



Arlan B - 09/25/2015

- H300

by: tubastew02/15/2012

I used this hinge to make a ramp extension for the back of my toy-houler. I added a 6' wide, 3' long extension made of 3/4 inch plywood. I was able to drive my 900 pound Goldwing up the ramp and into the tralier without the grounding problem I had on my first attempt. This hinge came without pre drilled holes, which was a nice feature as I could space them where I wanted them. A word caution may be warranted. If you are planning to have your application fold flat, then stagger your holes so the bolt/screw heads to not butt up against each other. 31885

- H300

by: Doug & Kim P.06/13/2016

Hinge arrived in excellent condition this morning - 30 minutes later it was welded in place! The hinge was straight & heavy enough for our purposes. I promised our client we wouldn't disclose this project until they advertised it; so, I'll post photos next month. Thank you! 260959


Hinge is still working as promised after a year of operation.

Doug - 06/13/2017

- H300

by: Teresa Shunk05/04/2013

Everything arrived in good condition as product was described. I only had a small problem with one of the latched for the cam-door lock. It was binding on the top and not allowing it to swing down. Nothing a little lubrication couldn't fix. Thank you, I will be placing another order soon. 79017

- H300

by: joe w.10/24/2013

This piano style stap hinge is exactly what I needed. I can drill holes to attach or not drill and weld with my mig to attach. Very heavy duty, and well made, can be cut down if need be. Great for fabrication use and price is hard to beat, got here quickly undamaged. 105059

- H300

by: Bill D03/20/2017

Excellent product and dealings. I might suggest a little more attention to packing. It arrived okay but when I lifted the box up the hinge fell out of the bottom. Guess lucky it didn't fall out in shipment. More reinforcement of the taped areas would help. 356407

- H300

by: Gary H.09/06/2016

The hinge is made of good quality steel for heavy duty applications and was very easy to install without any modifications. took about 30 minutes. I would recommend this product to anyone needing that extra lip at the end of the ramp for smooth loading. 291787

- H300

by: Chris06/16/2015

Too soon to tell Looks heavy duty compared to Orig hinge Use is for transition flap on drop gate. Note shipping tube damaged /split. Needs a bit of wood strapping taped to hinge to prevent possible bent hinge. 203732

- H300

by: Tom J04/10/2015

Exactly what I needed. Used to build folding ramp on fifth wheel toy hauler. Very please with item. Received in very good condition. Was a pleasure doing business with you. Looking forward to doing more. Thanks 184653

- H300

by: Steve S10/13/2016

Exactly what I was looking for to make a small flap extension ramp for my enclosed trailer. I like the fact that I can drill my own holes to fit my application. 306546

- H300

by: bill schlapkohl09/29/2016

I used this hinge on a teardrop trailer that I built it worked very well would recomemd it to every one, etrailer was very easy to order from,and fast shipping 301448

- H300

by: Jack L.05/07/2015

I was worried about the condition the product would arrive due to its length. It was packaged very well and arrived in perfect condition. Very strong hinge. 191134

- H300

by: Randall R.05/09/2014

Great job guys. My trailer parts arrived on schedule and parts were exactly as expected. I will continue to do business with you in the future. 129735

- H300

by: Bob10/12/2016

Nice, heavy, steel hinge. Very solid, will definitely do for the hinge on my Teardrop Galley hatch door. Was better purchase than expected 306073

- H300

by: MoparCzy07/27/2016

Good heavy duty hinge, just recently cut it and am using it for the doors on a trailer. I expect that it will hold up quite well. 276607

- H300

by: Owen W.06/28/2012

Just received the steel hinge and it looks perfect for what i need. Actually its heavier duty than I thought it would be. 45969

- H300

by: Russ02/27/2014

Order 3 "x6 ' hinge . Used to make ramp extension , worded out great , much heavier than I thought it would be . Thanks 117913

- H300

by: Robert02/03/2013

instant shipping, heavy-duty piece, great customer service, excellent price, safe packaging prevented shipping damage. 64892

- H300

by: Teresa Shunk05/04/2013

Everything arrived in good condition as product was described. . Thank you, I will be placing another order soon. 79018

- H300

by: Andre Dupont09/21/2016

Great product, fast shipping, very easy to use. I like that I could drill my hole were I needed them to be. 297389

- H300

by: Jon Luck02/12/2017

The product is of good quality and will fit its needs perfectly. The shipping was also quick . Thank you. 341048

- H300

by: Thomas W08/24/2016

The 6' long hinge arrived a day earlier than promised and in excellent condition. Thank You George J. 287263

- H300

by: Larry01/06/2015

Always have what I need. Great products and fast delivery time. Sincerely, Larry 167843

- H300

by: Don W.10/29/2015

Great service. Fast shipping at a good price! Keep up the excellent work. 231033

- H300

by: J.L. Brewer04/12/2012

Great delivery time. Have not installed the product yet but it looks good. 36896

- H300

by: Ron S10/13/2016

Came in great and easy to install. Cuts to fit and just as advertised 306432

- H300

by: Addie03/03/2011

Using this to make a ramp extension...great pricing and fast shipping 8310

- H300

by: Brandon04/15/2015

Exactly what I ordered, came in a time manner very acceptable! 185336

- H300

by: david r.06/25/2012

product arrived exactly as described. speedy shipping! 45556

- H300

by: Jeramy b02/25/2017

Piano hinge worked very well for my app lication. 345751

- H300

by: Tony06/06/2016

Good delivery and good as describe no c omplaints 257993

- H300

by: Jay07/31/2014

Fast shipping and excellent products. 143787

- H300

by: art howard04/23/2014

Fast shipping and stuff looked great. 126877

- H300

by: Myles05/04/2017

Great, very strong and plated well. 376964

- H300

by: Joe A.07/28/2015

Easy to find. Order was correct 215057

- H300

by: nourse01/01/2013

it will work good on my project 62314

- H300

by: Carl07/27/2015

Is a great price and quality 214662

- H300

by: Jerry07/11/2016

It did the Job, well built 270535

- H300

by: Mace12/18/2014

Quick service. Great job! 166024

- H300

by: Joe02/26/2016

Heavy duty, great product 238768

- H300

by: Larry H03/12/2017

Ordered more today! 351592

- H300

by: Tim B12/28/2015

Just what I needed 234439

- H300

by: RIck12/31/2014

Great products 167416


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Info for this part was:

Expert Research:
Michael H

Installed by:
Cole B

Photos by:
Zach O

Updated by:
Sarah W

Updated by:
Amanda M

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