24x24x1 MERV 2 Non Pleated Air Filter Replacement Filters (Actual Size 23.75 x 23.75) - 3 Pack R-6.0 insulation this 30-gauge stick-on collar is

this 30-gauge stick-on collar is specifically sized at 4 inches

+ Product Details 16" x 25" x 1" replacement air filters for your furnace

+ Product Details Size - 12"w X 10"h is the size for the duct opening measurement only

actual front end outer dimensions are approximately 22 5/8" width X 12 5/8" height

actual front end outer dimensions are approximately 22 5/8" width X 38 5/8" height -

24x24x1 MERV 2 Non Pleated Air Filter Replacement Filters (Actual Size 23.75 x 23.75) - 3 Pack R-6.0 insulation this 30-gauge stick-on collar is+ 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