Titus Model MCD modular core diffuser is extremely flexible; it can be adjusted for a 1, 2, 3, or 4-way pattern after it has been installed. The MCD maintains a horizontal flow pattern from maximum to minimum cfm, making it an excellent choice for variable air volume systems. FEATURES AND BENEFITS Excellent selection for variable air volume systems Easily adjustable for one, two, three, or four-way air patterns Maintains a horizontal flow pattern from maximum to minimum cfm