Choose Options Quick view Eclipse Eclipse 109031 Feedthrough Insulator, 2.87" Long Eclipse 109031 Feedthrough Insulator, 1/2" Conduit Knock-out with Ignition Studs Both Ends The Eclipse 109031 Feedthrough Insulator is for use with Eclipse burners. NPT: 1/2-14" Length: 2-7/8" MSRP: $1,010.00 Choose Options Compare