{"product_id":"3m-ndp03-4s-4-filtrete-deep-pleat-filter-20x25x4-4-pack","title":"3M NDP03-4S-4 Filtrete Deep Pleat Filter 20x25x4 4 Pack","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe 3M COMPANY NDP03-4S-4 is a deep pleat air filter designed for forced-air HVAC systems where improved allergen and particulate filtration is a priority. Sold as a 4-pack, each filter measures 20 inches x 25 inches x 4 inches and features a deep pleat construction that increases media surface area, extending service life while maintaining airflow. The thicker 4-inch depth makes this filter suitable for whole-home media cabinet housings rather than standard 1-inch filter slots. HVAC technicians and facility maintenance personnel typically specify this filter in residential and light-commercial applications where indoor air quality requirements call for a higher-efficiency filtration option.\u003c\/p\u003e\u003cp\u003eThis filter is intended for use in 20x25x4 inch media filter cabinets installed in residential and light-commercial forced-air heating and cooling systems. The deep pleat design is commonly found in whole-home filtration systems mounted at the air handler or furnace return-air section. The 4-pack configuration supports routine maintenance stocking, allowing multiple filter changes per service cycle without reordering. Each unit ships as an individual filter within the 4-pack quantity.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eDeep pleat construction increases filter media surface area for extended service intervals\u003c\/li\u003e\n\u003cli\u003e4-inch depth fits media cabinet housings designed for thick-format replacement filters\u003c\/li\u003e\n\u003cli\u003eTargets allergens and fine airborne particulates in forced-air HVAC systems\u003c\/li\u003e\n\u003cli\u003eSold as a 4-pack for convenient maintenance stocking\u003c\/li\u003e\n\u003cli\u003eFilter size: 20 inches x 25 inches x 4 inches nominal\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as a direct replacement for 20 inches x 25 inches x 4 inches deep pleat media filter housings used in residential and light-commercial forced-air HVAC systems. Verify cabinet nominal size before installation.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstallation should be performed by a qualified HVAC technician or trained maintenance personnel. Always shut down the air handler or furnace at the disconnect or thermostat before opening the filter cabinet. Confirm airflow direction arrows on the filter frame align with the system airflow direction before securing the cabinet door. Do not operate the system with an improperly seated or missing filter, as unfiltered air can contaminate the heat exchanger and blower assembly.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eFilter Size\u003c\/strong\u003e: 20 inches x 25 inches x 4 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePackage Quantity\u003c\/strong\u003e: 4 filters per package\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUnit of Measure\u003c\/strong\u003e: EA\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 13.12 pounds\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eStandard Information\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand\u003c\/strong\u003e: 3M COMPANY\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: NDP03-4S-4\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"3M","offers":[{"title":"Default Title","offer_id":51525242126642,"sku":"NDP03-4S-4","price":114.3,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/67462c8c7b0a28fa324b3e6154a6c3bd_ed898146-88a8-4414-87be-78a62b46b50f.jpg?v=1785468235","url":"https:\/\/voomisupply.com\/products\/3m-ndp03-4s-4-filtrete-deep-pleat-filter-20x25x4-4-pack","provider":"Voomi Supply","version":"1.0","type":"link"}