18 x 12 Merv 2 HVAC Pleated Filter, 12-Pack Round Stack Boot + Product Details Size -

+ Product Details Size - 34"w X 26"h is the size for the duct opening measurement only

Upgrade your system with our high-quality galvanized steel round duct

+ Product Details Size - 16"w X 6"h is the size for the duct opening measurement only

actual front end outer dimensions are approximately 25

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

18 x 12 Merv 2 HVAC Pleated Filter, 12-Pack Round Stack Boot + Product Details Size -+ Product Details Size 18"w X 12"h pleated MERV 2 filter for HVAC return filter grille 12 Pack. Actual dimensions: 17. 75" X 11. 75" High Quality A uniquie combination of cotton & synthetic fibers gives you the most filtration and the least air resistance equals great air & easy airflow for your system Design The W shaped pleats increase the surface area, effectively capturing dirt and particles such as pollen, dust mites, standing dust, spray paint