Building a small shed and I'd like to put up a garage door in the front (maybe 6' wide) for my mower. I'm not really having any luck hunting down a kit to self-install. Ideally something that comes with the panels, tracks, springs, etc. and I can just bolt together. Has anyone done this before, and if so where'd you have luck finding the kit?
They are all OVER the place. eBay, even.
Just cease looking for "garage" door and try "storage unit rollup" instead.
The same goods those rental storage outfits use by the millions.
But one of ever-so-many:
Roll-Up Doors for Storage Units - Steel Storage Roll-Up Door Manufacturer | DBCI
Now go look for a screaming deal, used or NOS, 'coz they are "out there".
"PS:" It can be waaaay cheaper and waaaaaaay faster to just grab two ignorant same-size exterior doors, new or recycled, and hinge 'em, opposite, add DIY trimwork where they meet and DONE.
Advantage? Use stout ones and good hinges and jambs you can hang handy stuff on them, outside as well as inside, and open just the one for human traverse, not both.
Rollup ribbed or panel doors either one are outright USELESS for either of those roles, basically
waste scarce wall-space.
"PPS:" A tilt-up mono-panel with drop-down support posts as shed door, and you have also created "extra" sheltered workspace or temp storage that keeps off sun or rain.
This is my personal pref as it makes a smaller shed work better for "useful".
Do mind the windstorms and shut the bugger. You'll want springs or counterweights for easy open, too.