20x22x1 MERV 2 Non Pleated Air Filter Replacement Filters (Actual Size 19.75 x 21.75) - 3 Pack 5" Diameter Our Galvanized Duct Box is

Our Galvanized Duct Box is made of high-quality 26-Gauge galvanized sheet metal for durability

Actual Filter Size – 17 3/4"w x 17 3/4" x 1"

+ Product Details Size - 4"w X 30"h is the size for the duct opening measurement only

+ Product Details Size - 14"w X 14"h Is The Size For The Duct Opening Only

120° plane bend - Immediately Improves the appearance of mini-split

20x22x1 MERV 2 Non Pleated Air Filter Replacement Filters (Actual Size 19.75 x 21.75) - 3 Pack 5" Diameter Our Galvanized Duct Box is+ Product Details 20" x 22" x 1" replacement air filters for your furnace, air conditioner, heat pump, or HVAC system (actual size: 19. 75" x 21. 75") A unique combination of cotton & synthetic fibers gives you the most filtration and the least air resistance equals great air & easy airflow for your system. The non pleated design provides low airflow resistance while still effectively capturing dirt and particles such as standing dust, spray paint