I want to recaulk the lower inside rim of my two sliding door Manhattan shower stall. To gain full accesss I need to remove, and later replace, the doors that run on coasters at the top and glide in a channel on the bottom. Should I unscrew the mechanism that holds the coasters on the top rim and pull the door up and out of the lower channel?

The following product numbers are printed on the stall. Manhattan w/o54468, and, 37540-17-40 and 37540-900-001-000. I have Googled in vain to find a Manhattan web site that provides specs for my model.