Heavy Duty Rolling Door Lock - Maximum Security for Storage Container, Trailer, or Box Truck Lock - Keyed Roll Up Door Security (Keyed Differently)

I used it on a roll up truck door. Works like a charm

Used this on a U-Haul truck and it worked fine. Using this device does not interfere with using a padlock on the normal door locking mechanism so we used both. I felt it provided a significant additional level of security beyond the padlock but, of course. thieves probably can defeat it although I suspect it might be simpler to just be cutting into the truck wall if one wanted to be so determined to steal from the truck.

This is the best lock on the market for securing rollup doors.

I bought this for my cube van rear roll up door. It’s definitely heavy duty. However the part I don’t really like is that, you still need a heavy duty pad lock that can’t be easily cut from bolt cutters. If you have a cheap lock or A lock that can be cut off, you can simply just slide this lock right off the handles. I say this because I tried it. For that reason I gave this product 3 stars. So make sure to buy a heavy duty pad lock if you get this product.

It’s possible to open the door with the lock on, the left side base , is not long enough.