Accidentally lowered trailer with the cabinet over the sink opened. Anyone know where I can get a new cabinet. 2007 22T

Welcome to the forum! Unfortunately, finding the cabinet system or piece that you need in Hi. may be next to impossible. I might suggest that you make what you need if you have basic skills. My first Hi Lo had a damaged bath cabinet door and within a week I lowered and damaged the second one. Thankfully, I have the skills and tools and made new ones. You'll find a way! stick with it.
Tree

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Treeclimber
2703 Tow Lite
2002 Escalade
Bonita Springs, Fl. &
Andrews, NC

When we had our 21T I lowered the trailer with the cabinet lid up. The pressure curled the hinges right off the lid but that was all the damage it did. If the lid was the only thing damaged and you don't have tools to make a new one, you should be able to get material cut to size at a Home Cheapo or Lowes.

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Fantastic Wife
2005 Toyota Tundra V-8 4.7L
2705T Tow Lite
1999 21T Tow Lite

My trailer is in the Los Angeles area. I use it for my home away from home to tour the "mainland". Any thoughts out there of someone parting out a trailer or a lead on the original manufacture of the cabinets in my unit

I've done the same thing, but was able to save the pieces and glue them back together. I also have lowered onto the access door in front. That was a couple pop rivets to fix.