Suitable for: Hoover Canisters C2089, S3630, S3639, S3670, S3520, S3577, S3603, S3611, S3613, S3611, S3620, S3630, S3639, S3646, S3649
For optimum performance:

• Change your vacuum bag every 2 to 3 months to maximize cleaning and keep your home free of dirt and dust.
• Change vacuum bags before they are full in order to keep your vacuum running efficiently.