FILTER 16 X 20 X 1 NATURALAIRE M13 Window Insulation Kit and it is great for

and it is great for smoothing soil in planters and beds

painted in a wide range of colors or unpainted

seals in skim coat & spackling

Comes with an interchangeable 36 inch fiberglass shaft

FILTER 16 X 20 X 1 NATURALAIRE M13 Window Insulation Kit and it is great forMERV 13. The top tier of filters for contaminant removal in residential retail air filters. Also for application in general surgery, hospitals, and health care facilities. Up to 90 days effective against pollen, pet dander, dust mites, dust and lint, smoke, mold, smog, bacteria, virus carriers, microscopic allergens, oil, smoke, and lead dust. Electrostatically charged. Wire backed media.