Spaceballs also eliminate the cheap rattling sound a panel makes when closed. This rattling is due to low humidity, and is very annoying. Spaceballs in the door frame keep the panel tight, centered and will not rattle. Spaceballs also solves the problem of cracking at the joints. This occurs when the door is made too tight.
Most companies lose money on call backs on solid raised and flat panel doors.
The news of a door assembled poorly, seems to travel faster than one which is free of defects. Space Ball Insertion Machine Pays for it self with faster production time. Then pays you for man hours saved. Call for price and demo. Two models available.