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Sharp pleat folds vs. rounded pleats -- is there a difference? - FAQs

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Sharp pleat folds vs. rounded pleats -- is there a difference?

Absolutely! One of the first things a filter expert will look for when examining a pool or spa element is the pleat fold or "knuckle radius" of the pleat. Why is this important? If you look carefully, you will notice that some manufacturers' pleats are very sharp while others are rounded and even appear puffy. With Reemay or other spunbonded polyester medias it is much easier to make a rounded fold than a sharp pleat. Moreover, a rounded fold can mask the filter manufacturer's inability to make straight pleats or maintain proper pleat spacing.








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