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Give it purpose - fill it with water filters, air filters, refrigerator filters, and more.
The Aprilaire 4270 is a replacement pleat spacer for the following air cleaner models:
The Aprilaire 4270 Pleat Spacers for 2400/5000 fits the Aprilaire 2400 and Aprilaire 5000 air cleaner models. This pleat spacer is shaped like a comb and supports filter media for even support of particulates throughout the filter. With these genuine Aprilaire parts you will be able to maximize the life of your Aprilaire filters.
Aprilaire 4270 Pleat Spacers for 2400/5000 specifications: