[. . . ] 600 CFM and 1200 CFM In-Line Blowers for Range Hoods PRODUCT MODEL NUMBERS UXI0600DY UXI1200DY Electrical Requirements: A 120 volt, 60 Hz, AC only, 15- or 20-amp, fused electrical circuit is required. [. . . ] PRODUCT DIMENSIONS Top (outlet) view 24³/" (62. 9 cm) 14/" (20. 0 cm) VENTING REQUIREMENTS The vent system must terminate to the outdoors. q The length of the vent system and number of elbows should be kept to a minimum to provide efficient performance. For the most efficient and quiet operation: q q Use no more than three 90° elbows. Make sure there is a minimum of 24" (61. 0 cm) of straight vent between the elbows if more than 1 elbow is used. q Use weatherproof caulking to seal the exterior wall or roof opening around the cap. q The size of the vent should be uniform. q q Calculating Vent System Length To calculate the length of the system you need, add the equivalent length for each vent piece used in the system. [. . . ] For complete details, see Installation Instructions packed with product. [. . . ]