Lifegard Aquatics Replacement Protective Sleeves for the Lifegard Aquatics Pro-MAX 5" 90W Standard High Output UV Sterilizer. All three sleeves are included. The long piece is 17.25", and the two shorter pieces are 3.75" long. 5" diameter. Lifegard recommends you replace these Protective Sleeves once a year so you do not damage the housing. Lifegard part # R450226B.

NOTE: The picture of the sleeves is a generic picture of the sleeves. Don't go by picture, but choose the sleeves designated for the model of Pro-MAX UV you own. Or, if you don't know which model of Pro-MAX you have, measure the Protective Sleeves you currently have to determine the correct size. Please also keep in mind that Lifegard has not been consistent in how the holes in the side pieces are cut. Yet, they are all guaranteed to fit.