Without adequate ventilation in attics and garages, structures often suffer from damaging heat and moisture problems. CW Ohio Louvers alleviate heat pressures and keep moisture out by channeling air into and out of attics and garages. With their patented design, CW Ohio High Perofrmance Louvers lead the industry with comparably less water blow-through than typical wood, metal and plastic louvers. That means even more protection and substantially lower maintenance costs down the ling. High Performance Louvers save your home from the headaches of ineffective ventilation, harmful water blow-through and all the resultant damages such as moisture can cause.