This article contains the Quick Start Guide for the HE400 Series Shark™ Air Purifier 4. This supports the following product SKUs HE400, HE401, HE402, and HE405.
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.