SEBO Airbelt E3 Premium Canister Vacuum model is considered a mid-size canister vacuum, which means it is smaller, more compact machine than the D4 Premium SEBO vacuum. The three-step, Hospital-grade Filtration features a a pre-motor filter, a three-layer Ultra Bag, an S-class exhaust microfilter, plus a tightly-sealed casing, perfect for allergy and asthma sufferers and pet owners. SEBO E3 outperforms many competing compact canisters when it comes to deep-down powerful cleaning. Authorized Sebo Dealer. Fast, Free Shipping Included.