Whether installing a new kitchen ventilation system or renovating an existing one, quality conscious restaurant owners and designers have insisted on GBH from Supreme Fan for over 25 years. This exceptional, heavy duty, curb mounted exhaust blower system is easily installed, delivers efficient performance and offers easy access for cleaning and servicing. The GBH, with static pressure capabilities to 5” w.g., is available in seven sizes from 12” – 30” and in CFM ranges from 500 –14,000.