MBAIYO 3 Pack Timer Switch Knob Replacement, Timer Knob Replacement Compatible with Intermatic, FD Series Spring Wound Timers for Wall Bathroom Fan Motor Heater Light Timers Switch

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【Complete Replacement Package】This timer switch knob replacement package includes 3 durable white knobs designed specifically work for FD series spring wound timers. Each bathroom fan timer switch features a 1-inch outer diameter with D-shaped shaft compatibility, making it the perfect timer switch replacement solution for your bathroom fan timer needs. 【Premium Quality Construction】Our timer switch knobs are crafted from high-grade plastic that outperforms original components in durability and longevity. The timer switch replacement compatible with intermatic is built to withstand daily use while maintaining smooth operation for your bathroom timer and other timer switch for bathroom fan applications. 【Easy Installation Process】Installing this timer knob is incredibly straightforward - simply press the timer knob replacement onto the D-shaped shaft for a secure fit. No professional help required! This knob switch replacement can be completed in minutes without replacing the entire electrical unit, saving you time and money. 【Wide Compatibility Range】This versatile timer switch replacement works with multiple timer models including FD series spring wound timers. Perfect as a bathroom fan timer switch for exhaust fans, heater timers, attic fans, whole house fans, motor controls, and various energy-consuming loads throughout your home or commercial space. 【Precision Engineering】Each timer switch knob replacement is meticulously designed to match original specifications with exact dimensions (1-inch diameter, D-shaped 3/16-inch shaft). The timer knob replacement ensures proper fit and reliable performance, while the knob switch mechanism provides consistent operation for your bathroom fan timer and other timing needs.