14x18x1 MERV 2 Non Pleated Air Filter Replacement Filters (Actual Size 13.75 x 17.75) - 3 Pack Welding & Soldering Actual Filter Size – 21

Actual Filter Size – 21 3/4"w x 21 3/4" x 1"

This 18" X 8" end cap is constructed with 26-gauge galvanized steel

+ Product Details Size – The size 30-gauge stick-on collar is 10" and it is compatible with duct 10"

+ Product Details Size – 3"h X 10"h is the size for the duct opening measurement only

14x18x1 MERV 2 Non Pleated Air Filter Replacement Filters (Actual Size 13.75 x 17.75) - 3 Pack Welding & Soldering Actual Filter Size – 21+ Product Details 14" x 18" x 1" replacement air filters for your furnace, air conditioner, heat pump, or HVAC system (actual size: 13. 75" x 17. 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