Pocket Door 3- Wheel Ball Bearing Soft Close & Soft Open Soft Close **** For LIGHTER WEIGHT DOORS Below 80 Pounds ****3-Wheel- Slides normally until soft close mechanism slowly pulls door into closed position. Soft Open-3- Wheel- Keeps door from slamming against stud in back of door in wall Compatible with Hartford Building Products 2450 & 2650**Minimum Door Width 28" for Soft Close and Soft Open.