Nasco decor exhaust fan

Ceiling exhaust fan hidden plastic jet strength 90 CFM ceiling hole size 20*20 outlet 4 inch high efficiency (very quiet) country of origin: China you can order accessories from here flexible hose (elbow) 4 inch size ventilation opening protection from birds and insects: circular grill 4 inch and 6 inch size available with 3 suction powers (90 - 120 - 190) bathroom 2x1.5 size needs a fan with 90 power (4 inch outlet) bathroom 2x2 size needs a fan with 120 power (4 inch outlet) bathroom 3x3 size needs a fan with 190 power (4 inch outlet)