Nominal Size: 15 x 20 x 1, Actual Size: 14 1/2 x 19 1/2 x 3/4 (14.5 x 19.5 x 0.75) Poly Green is made from durable polyester white media, with a frame constructed using recycled material The dual-sided beverage board filter frame enhances stability, durability, resistance, and high-efficiency functionality MERV 6 reduces HVAC energy consumption, ideal for spaces with low to moderate filtration needs Made in the USA: Proudly manufactured in the USA, ensuring quality and supporting local production These filters are ideal for those looking to reduce their carbon footprint while maintaining indoor air quality and providing relief from allergy symptoms.