The Eureka style H bags with the Eureka part# of 52323A, are the correct bags for the Eureka model# 3320 canister vacuum cleaner. The Eureka style H bags with the Eureka part# of 52323A, will fit the following Eureka Series Machines: 500, 550, 600, 700, 1240, 1250, 1500, 3200, 3300, 3400. 

Here is a link to our GoVacuum.com website so you can view and purchase the Eureka style H bags with the Eureka part# of 52323A: http://www.govacuum.com/eureka-h-vacuum-bags-genuine-3-pack-part-52323a.html