Automatic Door and Hardware is proud to offer the largest selection of commercial door louvers. Louvers are commonly found on fire rated steel doors used on utility rooms or electrical rooms, where the louvered vent helps reduce the heat inside of the room. Electrical rooms are often warm, by installing a louver panel in your steel door, you can greatly reduce the heat helping your electrical system run more efficiently. For whatever size louver you require, Automatic Door and Hardware can help. We offer free shipping in the Continental USA for all of our commercial door louvers.