- New
The JR Products 20365 window and vent knob is a replacement handle designed for many recreational vehicle window and vent applications. Its black plastic construction provides a practical replacement for a worn, cracked or missing knob. Designed for a compatible 1/2-inch shaft, it allows you to operate your window or vent with a secure grip. A replacement mounting screw is included for convenient installation. Check the shaft dimensions and mounting compatibility before ordering.