18x12x1 MERV 2 Non Pleated Air Filter Replacement Filters (Actual Size 17.75 x 11.75) - 3 Pack Straight Register Boot The snap on system makes

The snap on system makes for easy installation and will prevent the seam from coming apart

just push open and push close

+ Product Details Size – 4" X 10" is the opening (vent hole) dimension - actual size is approx

Its sleek contours bring a touch of modern sophistication to any room

or other utility areas

18x12x1 MERV 2 Non Pleated Air Filter Replacement Filters (Actual Size 17.75 x 11.75) - 3 Pack Straight Register Boot The snap on system makes+ Product Details 18" x 12" x 1" replacement air filters for your furnace, air conditioner, heat pump, or HVAC system (actual size: 17. 75" x 11. 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