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Equipment Supports and
Curb Extensions
Models GESS and GESR
These equipment supports are designed for use on both insulated (GESR)
and non-insulated (GESS) flat roof decks. They are mounted directly
to the deck structure, then roofed and flashed for weather tightness. A
variety of sizes and widths are available. (Refer to CAPS for more details.)
Models GESS and GESR are available in welded aluminum or galvanized
steel. Available in heights of 8, 12 and 14 inches and widths of 4, 6 and
8 inches.
Models GPE and GPEX
The extended base models mount between the fan and roof curb.
Heights range from 12 to 24 inches in 1/2-inch increments. Models
consist of welded aluminum or galvanized steel. The GPE is designed
with an access door to provide easy access to the damper and
damper actuator as well as fulfilling additional height requirements.
The GPEX is also designed to provide additional height requirements
without an access door.
Model VCE
The VCE vented curb extension is typically used in kitchen applications,
where the vents allow hot air and gases to escape between the ductwork
and the roof curb. Designed for use with an 8-inch high roof curb and
Greenheck fan models CUBE, CUE or USGF to provide the required 40-inch
minimum discharge height above the roof line per NFPA 96. Model VCE
consists of galvanized steel or welded aluminum.
Model ISB
Insect screen bases are available for applications where the building must be
completely free of insects, as in food processing operations. Insect screen
bases mount between the fan and the roof curb and provide an additional
6-inches of height. Two bolted access doors are provided for removal and
cleaning of the screen. Model ISB is constructed of galvanized steel or
aluminum with a fine mesh screen made of aluminum or stainless steel.
Adapters and Reducers
Used to adapt or reduce the standard fan curb cap dimensions
to a nonstandard specified curb size within 10 inches of
standard. Adapters and reducers are most commonly used to
match new fans to existing roof curbs. Construction consists of
welded galvanized steel or aluminum.