We encourage you to read our updated <a href="/about-us/privacy-statement" sfref="[f669d9a7-009d-4d83-ddaa-000000000002|lng%3Aen]01ea2c17-8254-4beb-9351-82e7d938940a">privacy statement</a>.
  1. Home
  2. Products
  3. Air Movement
  4. Fans
  5. Roof Curbs
Roof Curbs
Roof Curbs

Roof curbs are support structures for fans and ventilators. They can be selected to fit the specific type of roof such as flat, pitched, or ridged. There are many options available to make sure all building requirements are met.

Roof Curbs

Roof curbs are support structures for fans and ventilators. They can be selected to fit the specific type of roof such as flat, pitched, or ridged. There are many options available to make sure all building requirements are met.

Roof Curbs
OVERVIEW
#
GPI

A straight-sided roof curb intended for use on flat roofs. Includes a wood nailer for roofing material attachment.

  • 12 to 42 in. heights
  • 2 in. flashing flange
#
GPIP

A straight-sided roof curb intended for use on pitched roofs.

  • 12 to 24 in. heights
  • 2 in. flashing flange
#
GPIR

A straight-sided roof curb intended for use on ridged or double-pitched roofs.

  • 12 to 24 in. heights
  • 2 in. flashing flange
#
GPF

A straight-sided roof curb intended for use on flat roofs.

  • 8 to 42 in. heights
  • 2 or 5 in. flashing flange
#
GPFP

A straight-sided roof curb intended for use on pitched roofs in high wind or seismic applications.

  • 8 to 24 in. heights
  • 2 or 5 in. flashing flange
#
GPFR

A straight-sided roof curb intended for use on ridged or double-pitched roofs in high wind or seismic applications.

  • 8 to 24 in. heights
  • 2 or 5 in. flashing flange
#
GPFV

A straight-sided, ventilated roof curb intended for use on flat roofs.

  • 24 or 30 in. heights
  • 2 or 5 in. flashing flange
#
GPFVP

A straight-sided, ventilated roof curb intended for use on pitched roofs.

  • 24 or 30 in. heights
  • 2 or 5 in. flashing flange
#
GPFVR

A straight-sided, ventilated roof curb intended for use on ridged or double pitched roofs.

  • 24 or 30 in. heights
  • 2 or 5 in. flashing flange
#
GCC
A straight-sided curb for use on buildings constructed with metal roofing material. This curb can be pitched to match the roof slope.
  • 8 to 42 in. heights
  • 8 in. flashing flange
#
GPS

A canted roof curb intended for use on flat roofs.

  • 8 to 20 in. heights
  • 1 1/8 in. flashing flange
#
GPR

A raised canted roof curb intended for use on flat roofs.

  • 8 to 20 in. height
  • 1 1/8 in. flashing flange
#
GPFHL

A straight-sided roof curb intended for supporting heavy load equipment on flat roofs.

  • 12 to 24 in. heights
  • 5 in. flashing flange
  • Compression loads exceeding 1,000 lbs.
#
GPFHD

A straight-sided roof curb intended for supporting heavy load equipment on flat roofs in severe duty, high wind, and seismic applications.

  • 12 to 24 in. heights
  • 5 in. double flashing flange
#
ATI

A straight side, sound attenuated roof curb intended for use on flat roofs.

  • 18 in. height
  • 2 in. flashing flange
#
ATIP

A straight-sided, sound attenuated roof curb intended for use on pitched roofs.

  • 18 in. height
  • 2 in. flashing flange
#
ATIR

A straight-sided, sound attenuated roof curb intended for use on ridged or double-pitched roofs.

  • 18 in. height
  • 2 in. flashing flange
#
ATS

A canted, sound attenuated roof curb intended for use on flat roofs.

  • 18 in. height
  • 1 1/8 in. flashing flange
#
ATR

A canted, sound attenuated roof curb intended for use on flat roofs where the curb body is recessed into the roof achieving a lower overall height.

  • 18 in. height
  • 1 1/8 in. flashing flange
#
ATE

Model ATE is a sound attenuated curb extension designed to provide additional height to standard roof curbs and reduce fan sound traveling through the ductwork.

  • 12 to 24 in. heights
#
GPE

Model GPE is a curb extension providing additional height to standard roof curbs. Units feature an access door to provide easy access to the damper and damper actuator.

#
GPEX

Model GPEX is a curb extension designed to provide additional height to standard roof curbs.

  • 12 to 24 in. height
#
GESI
Model GESI is an equipment support for use on a non-insulated flat or single pitch roofs.

  • 8 to 18 in. heights
  • 4, 6, or 8 in. widths


#
GESS

Model GESS is an equipment support for use on a non-insulated flat roof.

  • 8, 12 or 14 in. heights
  • 4, 6, or 8 in. widths
#
GESR

Model GESR is an equipment support for use on insulated flat roofs.

  • 8, 12 or 14 in. heights
  • 4, 6, or 8 in. widths
#
ISB

Model ISB is a curb extension featuring an insect screen designed for applications where the building must be completely free of insects. Food processing is a typical setting for this product.

  • 6 in. height
#
VCE

Model VCE is a vented curb extension typically used in kitchen applications. When used with an 8 in. high roof curb and Greenheck models CUBE, CUE, or USGF, this extension provides the required 40 in. minimum discharge height above the roofline per NFPA 96.

#
ADAPTER

Roof curb adapters adjust the standard fan curb cap dimensions to match non-standard or existing roof curb size.