Manual Q is your one-stop refer­ence book on the low-pressure, low-velocity systems used in small and mid-size commercial buildings. Manual Q gives you time-saving “quick” fitting loss tables and a complete set of fitting loss tables compiled from the ASHRAE and SMACNA handbooks. This manual is an essential resource for HVAC professionals involved in the design and implementation of duct systems in small to mid-sized commercial buildings, ensuring systems are properly sized, efficient, and compliant with industry standards.