🌊 MADE TO WORK WITH HAYWARD HEATERS: The Swimables replacement complete fuse kit works for Hayward Heaters. The fuse will fit on H-Series Low NOx induced draft heater models H250IDL2, H350IDL2, H400IDL2. 🏊 PACKAGING INCLUDES: 1 Violet, 4 fuses 🛡️ INSTALL WITH EASE: Open the Hayward Heater and locate the fuses. If the sting in the fuse is cut, or if the fuse itself is cracked or blown, it is time to change it. Instead of changing only the ones that are bad, it is recommended to change all of the fuses. 💰 EXCEPTIONAL QUALITY: These aftermarket replacement parts made by Swimables are of the same or better quality compared to the originals parts. They are made to last in any weather condition. ☑️ 100% SATISFACTION GUARANTEE: Buy with confidence, as our premium quality Hayward heater fuses are built to last, and if you're not satisfied with it at any time within 30 days of purchase, we'll provide a refund or replacement.