CFM : 70 Sound Rating (Sones) : 1.5 Voltage : 120 For Use With : 4 In. Round Duct Grille Width (In.) : 7.375 Grille Length (In.) : 7.375 Color : White Certification : UL Listed
CFM : 50 Sound Rating (Sones) : 0.5 Voltage : 120 For Use With : 4 In. Round Duct Grille Width (In.) : 11.5 Grille Length (In.) : 12 Color : White Certification : Energy Star Rated/UL Listed
CFM : 70 Sound Rating (Sones) : 6.0 Voltage : 120 For Use With : 3 In. Duct Grille Width (In.) : 9 Grille Length (In.) : 9.5 Color : White Certification : UL Listed
CFM : 50 Sound Rating (Sones) : 4.0 Voltage : 120 For Use With : 3 In. Duct Grille Width (In.) : 9 Grille Length (In.) : 9.25 Color : White Certification : UL Listed