Hanging File Rail Follower Block
Clamp-on follower block that rides a filing-cabinet hanging-file rail and stops half-full drawers of folders slumping over; a 40 mm long inverted-U saddle takes flat-bar or rod rails up to 5 mm thick and 16 mm tall (needs 3 mm clearance on the cabinet side of the rail) and locks anywhere along the rail with one M5 x 20 bolt and a captured M5 nut. A 4 mm paddle 65 mm wide by 90 mm tall with gussets and a thumb hole backs the files; print two (the same part rotated 180 degrees fits the opposite rail).
desk filing-cabinet hanging-files follower-block