18X24X1 Air Filter 4 Pack, Merv 8 Pleated Dust Defense Air Filters Replacement Product Features TOP PERFORMANCE - TRIGHTFILTERS 18x24x1 air filter are made of durable thickened white cardboard that strengthens the overall structure without collapsing, providing better capture range and more consistent high-performance filtration with no noise during use. actual size: 17.8x23.78x0.79in HIGH-EFFICIENCY FILTRATION - MERV 8 replacement filters have more pleats compared to most retail home air filters and merv8 has better air permeability relative to another Merv rating, providing better airflow and efficiency and protecting your machine from damage and extending the life of your machine CAPTURES TINY PARTICLES - MERV 8 AC 18 24 1 furnace air filters comparable with MPR 600, FPR 5, keep trapping 92% of particles as small as 0.5 microns in the air and filter off such as household dust, microscopic particles, lint, dust mites, spores, and pollen, while allowing cleaner air to flow through, giving you a more comfortable and healthy environment WIDE COMPATIBILITY - AC filters are suitable for furnaces, air conditioners, HVAC filters and house vents. Our compact and stable home filters are not only good for your health but also can save you thousands of dollars in repairs and lower monthly energy bills, making them ideal for anyone who wants clean and fresh air EASY TO USE - Installing or replacing our 18x24x1 air filters for AC units or furnaces is as simple as it gets. First, you need to turn off your stove, and then Simply slide the filter into the air filter return device as indicated by the arrow to done! for optimal performance of your heating or cooling or HVAC system, change your filters every 60 to 90 days but increase frequency to 30 days during peak summer and winter months Shipping: Shipping is complimentary within the lower 48 US States. We Do Not Ship to PO/APO Boxes, HI or Alaska We Do Not Ship Outside of the Continental US All items ship within 24-72 hours of Payment For large items that require Freight shipping a valid phone number is required to call and schedule your delivery Terms of Sale and Feedback: Feedback is extremely important to us and If you are satisfied with our transaction, please take a moment to leave Positive Feedback. YOUR Satisfaction is our #1 Priority! If there are any issues, PLEASE contact us BEFORE leaving a neutral or negative rating so that we may resolve any concerns. We PROMISE we can make you happy if you give us a fair chance. Returns / Concerns: All items qualify for returns within 14 - 30 days of receipt. Buyer is responsible for return shipping on any item that is not damaged Please be sure this is an item you want before making your purchase. Customer Satisfaction is our TOP priority! All items are IN STOCK at time of listing. Inventory changes constantly and it is impossible to maintain a perfectly accurate count of all items. Please do not penalize us if we have to issue you a refund! Thank You For Your Business!