12 Pack AER1 HAPF30AT Filter Compatible with HAPF300AH-U4R

Compatible with Holmes Air Purifiers: CAP531-U, CAP529-U, HAP240, HAP242, HAP412, HAP422, HAP424, HAP706, HAP716, HAP9240, HAP9242, HAP9412, HAP9414, HAP9422, HAP9424 | Compatible with Bionaire Air Purifiers: BAP260, BAP815, BAP825, BAP9200, BAP9700, BAP520 | Cost-Effective Maintenance: Package includes 4 x filter and 8 x Pre-Cut Activated Carbon Filter. Filter Dimensions: H: 10 x L: 4.6" x W: 1.2" Carbon Filter Dimensions: H: 9.2" x L: 4.2" x W: 0.2" | Easy to Install: We recommend you to replace the filter every 3-6 months and pre-filter every 2-3 months for optimal performance (depend upon your environment and usage). Easy to install. Simply remove and replace from your machine unit when needed | Excellent Service: Fanulter a trusted brand is committed to providing customers with high quality products and more pleasant service. If you have any questions about our products, please feel free to contact us, Our customers are our focus as a business