KDK hidden exhaust fan 38CDG 6-inch outlet size 38*38

Hidden ceiling exhaust fan high efficiency KDK Model number: 38CDG suction power 344 CFM gypsum opening size 38*38 outlet 6 inches high efficiency (very quiet) warranty: agent two years (maintenance) - You can request accessories from here: flexible hose (Hanjur) 6-inch size - ventilation opening protection from birds and insects: circular vent grille 4 inches and 6 inches available in 5 suction powers (50 - 82 - 112 - 159 - 226 - 344) features and uses of KDK hidden exhaust fan very small space fan with 50 power (4-inch outlet) 2x1.5 bathroom needs a fan with 82 power (4-inch outlet) 2x2 bathroom needs a fan with 112 power (4-inch outlet) 3x3 bathroom needs a fan with 159 power (6-inch outlet) 5x5 kitchen or bathroom needs a fan with 226 suction power (6-inch outlet) 7x5 kitchen or bathroom needs a suction fan with 344 power (6-inch outlet) warranty terms and conditions: warranty two years manufacturing defects do not include misuse or effects of electrical hazards low or high voltage or fire effects or breakage or heat or poor installation