bing tracking image
  1. Trailer Door Holders
  2. Redline
  3. Stem and Socket
  4. 2 Inch Stem
  5. Rubber
  6. Plastic
Plastic Stem and Rubber Socket Door Holder - 2" Long Stem

Plastic Stem and Rubber Socket Door Holder - 2" Long Stem

Item # DH39R
Our Price: $19.65
You Save: 6%
Trailer Door Holders
Shipping Weight: 0.18 lbs
Add to cart
In Stock
zoom in icon
slider vertical icon
zoom out icon
Comment field cannot be left empty.
Name field cannot be left empty.

Thank you! Your comment has been submitted successfully. You should be able to view your question/comment here within a few days.

Error submitting comment. Please try again momentarily.

Product Images

In Use/Installed

Customer Photos

Need help with installation?
Locate installers near me
Hold trailer doors open with ease by mounting one part to the door and the other to the side of your trailer. Creates 2-1/4" gap between trailer and door when in use. All metal parts are zinc plated to resist rust and corrosion. Great Prices for the best trailer door holders from Redline. Plastic Stem and Rubber Socket Door Holder - 2" Long Stem part number DH39R can be ordered online at or call 1-800-940-8924 for expert service.
  • All Info
  • Reviews (95)
  • Q & A (0)
  • Videos (2)
  • Photos

Redline Trailer Door Holders - DH39R

  • Stem and Socket
  • 2 Inch Stem
  • Rubber
  • Plastic
  • Redline

Hold trailer doors open with ease by mounting one part to the door and the other to the side of your trailer. Creates 2-1/4" gap between trailer and door when in use. All metal parts are zinc plated to resist rust and corrosion.


  • Can also be used on windows


  • Stem 2" long

DH39R, Door Holder, 2" Plastic Stem and Rubber Socket

Video of Plastic Stem and Rubber Socket Door Holder - 2" Long Stem

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

Video Transcript for Redline Plastic Stem and Rubber Socket Door Holder Installation

Hey guys, Kevin here with etrailer, and today, we're gonna be taking a look at Redline's plastic stem and rubber socket door holder. Our neighbor today came to us with an issue that his door just kind of swings around in the wind, because there's nothing really holding it. There's no gas strut, there's no chain kind of holding the top or bottom of the door in place. So anytime he opens his trailer while he's working, it just swings around wildly in the wind, especially if his trailer's not level. And when you're out at the job site, your trailer is most likely never gonna be level. So the solution today is gonna be our Redline plastic stem and rubber socket door holder.

It's gonna hold our door in place- and prevent it from swinging back and forth, potentially hitting anything that might be near it. The stem of our door holder here today is going to be plastic, and then our actual holder is a rubber so that it allows that end on that plastic stem to actually click into it. And just from- that little bit of use right there, you can see that this really does get a very nice, tight grip on our stem. It's gonna give you a two and a quarter inch gap between your wall and your door when it's actually in place in the holder, as well. As far as the installation goes, it is easy peasy.

Something you can easily do within a few minutes. The most important thing is just knowing exactly what you're gonna be drilling into, and making sure that you're using the right hardware, because it's not gonna come with any. You're gonna have to figure out what you need for your specific fit. Like with ours today, I knew that this door was just gonna have styrofoam in it. So accordingly, I used a bolt with a nut on the other end to hold it to our door.

But on our other side with our holder, I could easily just use a self-tapping screw to just shoot it right into the frame. So your door holder is gonna come with just the plunger piece and the holder. It's not gonna come with any hardware just because they don't know exactly what you're gonna be going through. For our specific trailer today, I'm gonna be using a self-tapping screw through our base, and then I have a really long bolt that I'll be pushing through our plunger and pushing it into the door. Just because on our enclosed trailer, this door doesn't actually have any wood in it, it's just a thin sheet of metal on the outside and inside, and then just Styrofoam on the middle.

So shooting a normal screw through there, it really wouldn't have anything to grip onto. So a long bolt and a nut on the other end is gonna help hold that in place, because we are gonna be putting quite a bit of pressure once we push this in and pull it out. So we wanna make sure that our bolt's gonna be able to actually hold that to the door, and the holder to the wall. For that, we're gonna need a Phillips head bit. For our bolt, a couple of sockets. I'm also gonna be drilling a hole in the door so I can have that bolt go through, so I'm gonna be using a hole punch first, just to make sure that that hole kind of gets indented a little bit before I put my drill bit on it, and that's gonna help prevent my drill bit from walking at all. So let's go ahead and show you how we installed this. Placement of our holder and our plunger for our door with how little bit of room we have here and how much the door passes past the actual side here of our trailer, I'm gonna go ahead and put my holder right here. And I've already kinda looked up under here, and I know that there's a metal beam right there, just for the frame of the trailer wall itself. So I wanna get into that just so that I have more security with this. So I'm gonna put my self-tapper through, take my drill, and we're gonna pop this right into place. And we'll get that on there nice and tight. Now we can go ahead. We'll take our plunger, and I'm not gonna fully push that in yet. just kind of half do it, like I said, this does really grip onto there. So trying to get those two apart, just by hand, when it's not attached to your door can be a little bit difficult. And we'll swing our door out, and see where that matches up. What I'm gonna do is just take my pencil. I'm just gonna outline our plunger. Now that I have this outline of my plunger, I know where the center's gonna be, right here. Make a little mark. And then I'm gonna close the door, so I don't have this moving on me. One other thing to check before making any holes is also just whether or not this plunger side is gonna come into contact with anything in here. We don't want the door threshold from blocking our bolt to come through, but we're plenty high enough, we shouldn't have to worry about that. Now that I've got my hole punch in place, let's go ahead and hammer that in a little bit. And we'll grab our drill bit, and drill through. Like I said, it's just Styrofoam in there, so shooting a self-tapper would've had nothing to hold onto. We can make sure our bolt passes through. So I'm gonna take a wrench actually, to just hold that bolt in place. And I got my bolt through my plunger. Go ahead. Get that started with just my hand. I am using a locking nut, so it is gonna provide a little bit extra protection, so it actually stays on there. I don't have to worry about it loosening. And now we can just tighten this down. Now we have this on nice and secure, you can go ahead and cut that little tip off, if you want to. If not, not that big of a deal. This trailer's being used for work purposes so doesn't have to be that perfect. Now that we have that secured in place, let's go ahead and test it out. Well, I think that about does it for our look at Redline's plastic stem and rubber socket door holder. My name's Kevin, Thanks for watching..

Customer Satisfaction Score:

Customer Reviews

Plastic Stem and Rubber Socket Door Holder - 2" Long Stem - DH39R

Average Customer Rating:  4.7 out of 5 stars   (95 Customer Reviews)

Hold trailer doors open with ease by mounting one part to the door and the other to the side of your trailer. Creates 2-1/4" gap between trailer and door when in use. All metal parts are zinc plated to resist rust and corrosion.


Right on the MONEY...


When ordering this product, I did not order it for the purpose of its intention, I was looking for something to modify a way to store my wheel lock. It works perfect for storing wheel lock.



This item worked great! Needless to say, I did not use this product as its intended use.


Worked fine.


I would not recommend this product cheaply made tore away from the door after using it twice.


Held up beautiful, was easy to install. Very happy with purchase.


We use this on a number of boxes and bars to hold them open during loading and off loading petroleum products. They work well and by rotating the retention cup around and keeping it lubed, we extend the service life even longer. Shipping, customer service and every product that we purchase through etrailer is durable and long lasting.


These Stems are exactly what I wanted and came in mint condition. No complaints here and will work perfectly on my horse trailer.



My trailer doors are working great!


The door holder does exactly what it is supposed to do but not on a door. I use it to hold my swing-out saddle rack in the travel position in horse trailer tack rooms.

I always get great service from


Good product holds the doors open and secure. 2 minute repair/replacement could not have been easier. Prompt shipping great communication and service


Haven’t got to actually use them yet, but the quality of the rubber seems to be very good. Look way better then the broken and dry rotted ones that were on my trailer


First I must say that shipping time was great! My trailer already had the stems so I only used the Rubber Socket! Everything is working perfectly. 2 thumbs up!


I wish it came with hardware (although I knew it didn't when ordering) but a great product for my horse trailer doors. I love how it's secure, but releases with a firm tug.


Perfect replacement for my rusted out oem plate holder.


What I like about this door holder is that it is plastic but not stiff enough to hurt a horse if it rubs against it. Some of the metal holders can cause severe leg damage to a horse.


Looking for this type of door holder, and won’t rust!


This is what was used on my 2000 Chris Craft boat to latch the engine compartment. Found it on your website!


I received the item ordered very quickly and it was exactly as described. I am very pleased and will order from etrailer again.


Doesn't come with any mounting hardware


Works great and act's like a door stop to.


Great replacement parts, fit right on existing studs,


Works good. Better in the summer, a little lube helps in the winter months.



Still working great


Purchased as a replacement. Does not quite let the door open completely.


This was an exact replacement, but did not include the nut and bolt.


product came in quickly and is just i needed to fix up my trailer.


Will keep trailer doors open.

Show More Reviews

See what our Experts say about this Redline Trailer Door Holders

Do you have a question about this Trailer Door Holder?

Info for this part was:

Employee Michael H
Expert Research:
Michael H
Employee Jameson C
Expert Research:
Jameson C
Employee Jeff D
Installed by:
Jeff D
Employee Kevin C
Installed by:
Kevin C
Employee Chris R
Video Edited:
Chris R
Employee Jonathan Y
Video by:
Jonathan Y

At we provide the best information available about the products we sell. We take the quality of our information seriously so that you can get the right part the first time. Let us know if anything is missing or if you have any questions.