ASHRAE Terminology

A Comprehensive Glossary of Terms for the Built Environment
ashrae.org/ashraeterms

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Type I hood

a hood designed to capture smoke and/or grease-laden vapor produced by a cooking process, incorporating listed grease removal devices and fire suppression equipment. Type I hoods fall into two categories: listed and nonlisted. Listed hoods have been tested in accordance with UL Standard 710.1. Conventional, or nonlisted hoods are hoods that meet the design, construction, and performance criteria of the applicable national and local codes.