The Honeywell 5112-11 Repl Act Mntg Kit Vbn2 + Vbn3 is an essential component in HVAC systems designed for peak performance and efficiency. With regard to actuator mounting, this kit is a replacement that is especially meant for VBN2 and VBN3 models. It serves as an actuator mounting kit, which makes it easier for HVAC equipment's valves to function smoothly. https://www.partshnc.com/repl-act-mntg-kit-vbn2-vbn3-2