RITE Slide Track Hardware Standard Features Wheel and Hanger Assembly Rated for doors up to 550 pounds Hanger Body made of 316 stainless steel pendent bolt and four ball bearing nylon wheels 304 Stainless Steel Activator Stud 304 Stainless Steel Hanger and Activator Mounting Plates Two 304 Stainless Steel In Track Stops with Rubber Bumper Soft Open/Close Devices Two devices per assembly: closed and open positions Facilitates quiet and controlled operation even under aggressive use Reduces pinch points and risk of accidental injury Reduces wear and tear on door and hardware Robust and highly durable design Automatic Door Bottom Fully mortised Aluminum case which surrounds a movable drop-bar seal and integral channel for bottom door guide Drop-bar seal is actuated by a plunger which contacts the C-Channel when door is in closed position PemkoPrene seal insert Black e-coated steel end plates Bottom Door Guide 304 Stainless Steel and nylon Surface mounted to face of frame