Check the listing for details. 20LB ANSUL SENTRY AA20-1 - ABC Dry Chemical Fire Extinguisher Full Insp. 24. Condition: New – Open box, Made in United States. Listed at 60.00 USD. The 20LB ANSUL SENTRY AA20-1 Fire Extinguisher is a high-quality and reliable firefighting tool designed for commercial and industrial use. Made in the United States, this dry chemical extinguisher is lightweight and easy to handle, with a capacity of 20 pounds of extinguishing agent. The SENTRY model is known for its performance and durability, making it a trusted choice for fire protection in various settings. With a full inspection guarantee, this fire extinguisher is a valuable addition to any facility maintenance and safety plan.