Hart & Cooley Inc. introduced the Smart Filter Seal as a new addition to its lineup of Smart Air & Energy Solutions products. The company claims the Smart Filter Seal is a durable, yet flexible high-strength film designed to fit tightly over the air filter slot on the return air plenum. It prevents air from bypassing the filter and thus improves indoor air quality. Magnets surrounding the perimeter hold it tight against the plenum to prevent air leakage. It can be easily removed to change out dirty air filters and replaced again.

Hart & Cooley Inc., 5030 Corporate Exchange Blvd., Grand Rapids, MI 49512; (800) 433-6341; fax (800) 223-8461; www.smartairandenergy.com.