Due to the width and height limitation from UL and other governing departments limitation to the door you will see some doors wont show up. For example counter shutter are small size doors
in from width 4 inch to 8 inch maximum and also there are height limitation as well. For Fire Doors there are also same limitation from UL. That could be the reason that some specific product might not show up in related matches.
Please try and change the width and height and and then change one of the selection drop box to reflect your changes.