ZEPHYR FILTRATION™ Deep Pleated Return Air Grille Filter, VGF Series, 20 in Length, 36 in Width, 3 in Height, Additional Information: MERV 11 Filter

• "Best in class" home filtration
• Lasts up to 6 months or longer
• Health and allergy benefits via high efficiency media
• Energy savings through technology - more media surface area equals lower static pressure
• Fits most standard 1 in returns without modification