Day and Night, a brand of the Carrier Corporation, delivers high quality furnace and air conditioner filters that are designed to provide whole house filtration that is long-lasting, high quality, and great for those with breathing problems. It does this through superior design, excellent filtration, and special features designed to improve air quality conditions. These special features include pleated design for higher dust-capturing capacity, highly efficient electrostatic filtration, and sturdy die-cut construction. These replacement filters for Day and Night are also available in carbon filtration, HEPA filtration, and pre-filtration, and as an added bonus, we also offer filters with gasketing. Day and Night is a reliable brand with healthy results for home air quality.