SS2 Style HVAC Drain Pan Over Flow Safety Float Switch L Shape - Prevents Water Overflow from air Conditioning condensate fits 3/4 in evaporative coils and Secondary Drain Pans: Amazon.com: Tools &
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Safety Overflow Float Switch for Drain Pans - China Air Conditioner Float Switch, Drain Pan Switch | Made-in-China.com
WESUA SS2 Condensate Overflow Float Switch Safety Water Level Sensor PVC for HVAC Drain Pan 3/4 inch Adaptor White Color: Amazon.com: Tools & Home Improvement