Trash bag adapter Mark IV

Mark III is the same using Crius clips only.  It's not bad but without target for the trash bag to clip on to.  This one adds 4 tees just as marks for the 4 corners of the trash bag.  And since they are tee's, the bag can be securely held on position with a small section of pipe plugging into the tee.

Because the field modified dimensions last time wasn't updated on the spreadsheet, I was wrong by two inches.  I find it useful to clip the trash bag onto the frame at two more locations, forming a hexagon.  The new shape is better, if only there's less length for the trash bag to slack.  So, there will be mark V with the clips replaced by tee's.