What Size Channel Does My Trailer Coupler Have?
Updated 12/15/2025 | Published 11/12/2024
Question:
Instructions for ordering correct coupler latch says to measure width of channel. Can you provide a diagram or photo of where to exactly measure the channel, and what/where is “the channel” ? I have an A frame coupler that is standard factory issue on my Casita 17’ travel trailer. Thanks in advance…
asked by: Gary P
Helpful Expert Reply:
Hello Gary.
The channel width would be the width of the frame that the coupler installs on. I am attaching an image of the Bulldog Collar-Lok Coupler w/ Pin # BD028243 so you can see what measurement they are referencing. In the image provided this one would be a 3" channel because that is the inside to inside measurement.
I have also included a link the all the coupler latch repair kits that we offer.
(click to enlarge)
Product Page this Question was Asked From
Curt Coupler Repair Kit for 2" Posi-Lock Coupler Latches - Curt Straight Tongue Couplers
- Accessories and Parts
- Straight Tongue Trailer Coupler
- Coupler Repair
- CURT
more information >
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Kate F.
12/15/2025
Hey Gary, did the image of the Bulldog coupler help you see where to measure the channel on your Casita’s A-frame coupler? Knowing how that measurement worked out could help others trying to match their latch repair kit.