$18.00 Puritan Bennett 21A / 31A / 41A Vent Key quantity Add to cart SKU: CS060-1 Categories: PB 21A 31A & 41A, Transfill Accessories Tags: 21A, 31A, 41A, 775182, bennett, key, puritan, vent Description Description Please Call 866-446-8765 to order. Online ordering currently unavailable. MFG # 775182 Item# CS060 Call 866-446-8765 for pricing and availability. Related products Puritan Bennett 21A / 31A / 41A Bezel Window Decal $3.50 Add to cart 4 Ft Transfer Line 1/2″ with Full Armor $118.75 Add to cart Puritan Bennett 21A LOX Base Read more Puritan Bennett Companion C1000 LOX Portable Read more