UL 710 refers to Underwriters Laboratories Inc Standard #710. Type 1 Commercial Kitchen Ventilation Hoods are tested to and must comply with UL 710 to obtain a listing.
The UL 710 Standard covers Type 1 CKV exhaust hoods intended for placement over commercial cooking equipment. Exhaust hoods with and without exhaust dampers are covered by these requirements.
CKV Type 1 Exhaust Hood Testing
Exhaust hoods are evaluated relative to minimum exhaust airflow required and maximum supplied airflow allowed for capture and containment of cooking effluence under laboratory conditions.
Code Compliance
All exhaust hoods are intended for use with fire extinguishing systems in accordance with NFPA 96, the Standard for Ventilation Control and Fire Protection of Commercial Cooking Operations.
Exhaust hoods covered by these requirements are intended for installation in accordance with codes such as the International Mechanical Code (IMC), Uniform Mechanical Code (UMC), and NFPA 70, the National Electrical Code.