2Pcs 6 Wheel Trolley Assembly Rollers Six Bearing Trolley Assembly for unistrut 1-5/8" Wide and All 1-5/8" or Taller Strut Channel

Using these for my sliding barn doors. The doors are 12 ft by 10 ft made out of 26 gauge sheet metal and 20 gauge steel studs. Weight is absolutely not an issue with these rollers. They have been functioning trouble free for months now.

Husband ordered for parts tray for trailer he built. Says worked perfectly

These work like a champ, but the only problem with them is that there is no space left in the unistrut track. This means you have to secure the unistrut track from the outside instead of using readily available t-nuts or lag bolts found at the hardware store to secure the track to an overhead structure. These casters fill up almost the entirety of the space inside the unistrut channel.

These are exactly what I was looking for and is so much easier than carrying a trolley and a gantry. Just make sure you understand what the uni-strut is rated for and how much the uni-strut weight rating de rates as the length gets longer

They work good

Good choice

They will work fine.