Aprilaire Pleat Spacer 4119 for Model 2200 (5-Pack). Eliminate combs with the Model 2200 Upgrade Kit! IT'S EASY, order the upgrade kit 1213. This component looks like a large comb. It is designed to support the filter ng media for even loading of particulate throughout the Air Purifier media. This will ensure maximum life from it. There are five pleat spacers in every Model 2200 and 2250.