24x24x1 MERV 2 Non Pleated Air Filter Replacement Filters (Actual Size 23.75 x 23.75) - 3 Pack Compatible With Duct 12in + Product Details Size -

+ Product Details Size - 10"w X 8"h is the size for the duct opening measurement only

actual front end outer dimensions are approximately 21" width X 21" height -

It also has a lock catch built in for your convenience

Premium Quality – We can proudly say our product is made of high-quality galvanized sheet metal with crimped ends (snap-lock design) for easy fitting and secure connection

Design – The stick-on side take-off duct is designed to connect a square duct to a round duct

24x24x1 MERV 2 Non Pleated Air Filter Replacement Filters (Actual Size 23.75 x 23.75) - 3 Pack Compatible With Duct 12in + Product Details Size -+ Product Details 24" x 24" x 1" replacement air filters for your furnace, air conditioner, heat pump, or HVAC system (actual size: 23. 75" x 23. 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