What are the inverts of your *spigot, *discreet gully or *gully outlets? October 15, 2019 10:04 Updated Either email a full brochure and refer them to the relevant pages showing the assembly inverts, or email the individual pages. To view full product details please visit www.aco.co.uk Related articles What gratings are suitable for bare feet? What is the maximum amount of fall you can get in the channel system in a continuous run? Comments 0 comments Please sign in to leave a comment.