If you’ve ever had the experience of having to clean your hang on back intake prefilter and really disliked cleaning that slimy clogged up mess of a filter, the no clog intake prefilter and you are a perfect match! Just make sure you select the right size by referring to the measurements below. 
Small:
Height: 2.68inch (6.8 cm)
    Diameter: Inner: 0.47inch (1.2 cm)
    Outer: 0.98inch (2.5 cm) 
Large:
    Height: 3.35inch (8.5 cm)
    Diameter: Inner: 0.63inch (1.6 cm)
    Outer: 1.18inch (3 cm)