MERV 13 Specifications: • Industry applications: Pre-filtration for residential, hospitals, general health care facilities, food processing plants, telecommunications, pharmaceutical and semi-conductor manufacturing, etc. • 100% Synthetic Media Pack Support Member, Galvanized Steel Pleat Support Grid, Water-Repellent Adhesive, Double Wall Frame • Shields from pollen, dirt, dust, pet dander and virus carriers, smoke, smog, lead dust, oil smoke and micro allergens. • ASHRAE tested as required by LEED guidelines. • Meets LEED Green Building criteria for minimum efficiency • Heavy Duty Beverage Board Frame - Moisture resistant, sturdy frame material stands up to rough handling, difficult service conditions, long service life. • Low initial resistance also helps to promote low energy consumption • Consistent pleat shape produces maximum performance, reduces resistance and improves dirt loading characteristics throughout the life of the filter. • Expanded metal pleat support grid is made of galvanized steel for maximum rust resistance. • Our MERV 13 filters will not rack, warp or bend under normal handling or operating conditions. • Water-Repellent Adhesive – Adheres Even When Wet. The adhesive used to bond the frame and media pack into a unitized assembly is highly water repellent. The pleats hold together even when wet. No delaminating, no excessive buckling, no collapsing. • Suggested to replace at least every 3 Months • Made in the United States