For 200, 600, 1400, 1900, 2000, 4000 (excluding 4300-4600) and 5000 (excluding 5180-5190 and 5700-5800) Series Uprights. For optimum performance, change bag every 1-2 months. Store in a clean, dry place. Replaces part number 52320A and 52320B. Package of 3.