Greentech Ultra Shield™ - MERV 13 HVAC Filter with ODOGard®

Maximum protection—down to virus carriers.  This filter is like a fine-tuned sports car: precise, powerful, and not for everyone. If you want the highest level of home air filtration, Ultra Shield™ delivers. This is our most advanced residential filter, capturing ultra-fine particles such as smoke, bacteria, and virus carriers—offering hospital-grade performance in a household setting. Combined with ODOGard®, it also neutralizes odors and harmful VOCs at the molecular level, giving you cleaner, fresher air with every breath.  Because of its dense filtration, Ultra Shield™ fills up faster than lower-rated filters. For optimal performance, it should be changed every 30 to 60 days. If regular filter changes aren’t realistic for your lifestyle, our Paws & Pollen™ (MERV 11) may be a better fit—it still provides excellent filtration with fewer replacements.    Key Features  Captures ultra-fine particles, including smoke, bacteria, and virus carriers  ODOGard® technology eliminates odors and VOCs at the molecular level  Ideal for homes seeking hospital-grade air protection  Recommended for households with high air quality concerns    Why Subscribe?  A filter this powerful works best when replaced regularly. With a subscription:  You’ll get timely deliveries every 30 or 60 days  Avoid clogged filters and keep your HVAC system efficient  Save money with each order—and never forget a change again  *Note: Greentech Filters are higher efficiency filters that have a lower pressure drop. We recommend visually checking your filters for particulate load every 30 days based on your indoor air quality environment.