20" Upper Tray Quick Lens V-2 ( Read Details Pre Rev1 Needs Modification)20" Upper Tray Quick Lens WARNING PRE REVISION 1 BOARDS CANNOT USE LAST 2 SCREW HOLES Modification had to be made to bottom led board tray to allow room for lens to slide in and out. If you have the original Ver 2 tray you can still use this lens but the last 2 screws cannot be used. Our recommendation is to glue the edge of upper tray quick lens where board is inserted or modify to accept the 2 outer edge screws that have been relocated. Please see