Double Deflection Register – Removable CoreUniversal outlets or Double Deflection Grilles are generally used in sidewall applications. They consist of two separate rows of individually adjustable vanes front and rear. The Front Vanes are horizontal so the primary air leaving the outlet is directed above the room occupants and does not reach the breathing zone until well mixed with the secondary room air. The Rear Vanes are vertical and are used to direct the air in a straight blow or spread