Reducers are available to amend the diameter of the connections from terminals to ducting.
Please note that these product properties are not a replacement for the manufacturer's literature and it is always recommended that Ubbink (UK) is consulted before specifying.
Ubbink (UK) hasn't formatted technical specifications for Reducers yet. However, you can download 1 technical file, in the section below.
Please check out the similar products section for alternatives. Hint: products with have technical specifications.