Only the electric and ambient range can be mounted vertically. Please see the AB air curtain sales brochure (https://www.reznor.co.uk/wp-content/uploads/2023/12/Reznor-Nortek-AB-Air-Curtain-Sales-Brochure-Jan-23.pdf) for more details.
Can the AB air curtains be mounted vertically?
Information about Reznor's range of air curtains.