This article contains the Owner's Guide for the IZ440 Series Shark® Vertex™ DuoClean® PowerFins Lightweight Cordless Stick Vacuum. This supports the following product SKUs IZ440H, IZ441H, IZ441HBRN, and IZ440HC.
On the bottom of your box, you should see the model number near the bar code.
The main body of the vacuum (back of the unit) should have a rating label that features your model number.
Your product's model number is listed on the front cover of your instruction booklet.