Spigot Dimension
Replaced 2 ports last summer on a h28.5. Dry fit, marked the spigot dimension to 'flush' including the outboard trim ring and added @ a 1/4 inch. Cut off the spigot to the marked line w/ a hand saw, eased the raw edges w/ a rasp & round file for the corners and completed the installation. Functional, unobtrusive and as close to OEM as I could make it.Customer Service @ Bomar was helpful and ports arrived w/in 3 days of placing order. Good luck!