Drop-Shipped Add to Cart Compare Quick view True 831971 - M-182-013-66332 - Defrost Timer by Invensys True MSRP: $203.24 Now: $114.99 Contact us for expedited shipping options. The True 831971 defrost timer by Invensys (M-182-013-66332) is designed to regulate the defrost cycle that prevents frost buildup on the evaporator coils... MSRP: $203.24 Now: $114.99 Add to Cart Compare Quick view Qty in Cart: 0 Quantity: Decrease Quantity: Increase Quantity: Price: MSRP: $203.24 Now: $114.99 Subtotal: Add to Cart