KDK hidden exhaust fan 27CHH 6-inch outlet size 27*27

Ceiling hidden high efficiency exhaust fan KDK Model number: 27CHH suction power 159 CFM gypsum opening size 27*27 6 inch outlet 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 fan grille 4 inch and 6 inch 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 82 power (4 inch outlet) 2x2 bathroom needs 112 power (4 inch outlet) 3x3 bathroom needs 159 power (6 inch outlet) 5x5 kitchen or bathroom needs 226 power (6 inch outlet) 7x5 kitchen or bathroom needs 344 power (6 inch outlet) exhaust fan conditions and warranty terms: two-year warranty manufacturing defects do not include misuse or effects of low or high electrical current, fire effects, breakage, heat, or improper installation