Shop by Fan Size

Find the right fan by nominal size. Our range spans 100mm to 1000mm across 17 sizes, covering inline fans, plate-mounted fans, cased axial fans and TCBT short cased axial fans. If you are replacing an existing fan or matching new ducting, starting from the size is usually the quickest route: each page lists every fan we offer in that size, whatever the type.

Alpha Air Ventilation Supplies is a Leicester-based supplier of commercial and industrial ventilation equipment. Stocked items ordered before 3pm are dispatched for next-working-day delivery, and UK delivery is free on orders over £400 ex VAT.

Not settled on a size yet? You can also browse the full fans range by type.