Centrifugal Roof Exhaust Fans – Series L

Models LB, LD, LBP, and LDP exhaust fans are designed to meet the needs of general clean air applications. Tests have been conducted to ensure safe and reliable fans capable of withstanding normal exhaust conditions.
When roofing materials extend to the top of the curb, roof curbs should be 11⁄2 in. (38 mm) (3/4 in. (19 mm) on
a side) less than the unit curb cap to allow for roofing and flashing. For recommended duct size, damper size, and roof opening dimensions, refer to CAPS or the performance data pages. Installation must include a means for inspecting, cleaning, and servicing the exhaust fan. Due to the varying airstreams encountered in commercial ventilation, system designers must be aware of national, state, and local codes and guidelines governing these installations. Local code authorities should be consulted before proceeding with any ventilation project.

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Centrifugal Roof Exhaust Fans – Series L

Greenheck’s Series L, low silhouette, models LD, LB, LDP, and LBP centrifugal roof exhaust fans
provide the industry’s best performance and durability for general clean air applications.
• Broadest performance in the industry, up to 1.25 in. wg (311 Pa) and 37,500 cfm (63,713 m3/hr).
• Performance as cataloged is assured. All fan sizes are tested in our AMCA Accredited Laboratory, and all models are licensed to bear the AMCA sound and air performance seals.
• UL Listed for electrical.*
• Greenheck subjects these products to extensive life testing, assuring you the fans will provide years of reliable performance.

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