Roll Up Door Interior Latches

[BlueDodgeRam]

I have a 10x10 roll up door on each end of my 30x50 shop. The doors are made by DBCI I believe. They currently only have latches that operate from the outside (think storage unit) and its getting annoying having to walk around the building to open up the one door.

I'm sure I'm not the only one here with these types of doors, so what have people done to make these doors latch-able/lockable from the inside?

 

[brownbagg]

i welded a pipe. small pipe like 1/2 to the inside bottom flange and then drilled a hole in the channel. i slide a long anchor bolt i had laying around through the pipe into the channel. one each side and it not going be open from outside