The 1 inch pleated MERV 11 Glasfloss Air Filters provide an exceptional level of air filtration for Residential and Commercial environments. Constructed with 100% synthetic media ensuring Heavy-Duty Moisture-Resistance combined with durable, high-quality materials that promise exceptional performance and value. The pleated Air Filters capture finer particles, including Pollen, Dust, Mold Spores, Pet Dander and smoke, contributing to a healthier indoor environment.