Genuine Eureka Style T Vacuum Bag, Case Pack of 18 Bags EUREKA with bag 18 bags per case For optimum performance change bag every 30 to 60 days Designed for eureka canister models 970 and 980 series Eureak T Bag 18 bags per case For optimum performance change bag every 30 to 60 days Designed for Eureka Canister Models 970 and 980 series