12x25x1 MERV 2 Non Pleated Air Filter Replacement Filters (Actual Size 11.75 x 24.75) - 3 Pack 10" Diameter padding: 0 4px 10px 0

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is the same as a 1/8" Plumbing1fitting

+ Product Details Perfect Fit & Easy Sizing - Designed for a 22" x 10" OR 10" x 22" duct opening (measured at the opening)

Convenient Storage – Leather-lined side loops

+ Product Details Size - 12"w X 24"h X 2"d (for duct opening measurement only)

12x25x1 MERV 2 Non Pleated Air Filter Replacement Filters (Actual Size 11.75 x 24.75) - 3 Pack 10" Diameter padding: 0 4px 10px 0+ Product Details 12" x 25" x 1" replacement air filters for your furnace, air conditioner, heat pump, or HVAC system (actual size: 11. 75" x 24. 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