The all-new Accumulair Ruby is the highest-efficiency Accumulair filter on the market. This new, top of the line filter boasts a MERV 11 rating and is designed for those who are highly concerned with airborne allergens in their home or office setting. The mini-pleat design incorporates all of the best in filtration technology. Mini-pleats offer five times the media area compared to standard pleated panel filters, which allows the filter to last longer and offer higher efficiency. The media is a single web of gradient-density fibers that allow for high dust holding, high efficiency, and low-pressure drops. The pleats are held rigid and evenly spaced to maintain even loading and air distribution.
MERV 11 is comparable to MPR 1000-1200 and FPR 7 rating air filters.