Compatible with InVent Series Fans：Designed specifically for Broan-NuTone InVent Series bathroom ventilation fans, ensuring a secure and proper fit Adjustable for 16" or 24" Joists：Flexible design fits standard 16-inch or 24-inch on-center joist spacing, ideal for various ceiling configurations High-Strength Materials：Constructed from durable materials that provide excellent load-bearing capacity and long-term stability Quick and Easy Installation：Pre-drilled holes and integrated alignment guides simplify the setup process and reduce installation time Secure and Stable Mounting：Reinforced design minimizes vibration, shifting, or loosening, keeping your fan safely in place for years MHB4 Ventilation Fans Hanger Bar Kit for Broan-NuTone InVent Series Bath Exhaust Fans – Adjustable Mounting Bracket Set