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Model GPI Standard
Construction Features
INSUlATION
- Ridged fiberglass insulation is standard on
all GPI curbs. The insulation is securely attached at both the
top and bottom with an insulation tray so it will not have any
exposed ends. Three pound density insulation is available in
1, 1
1
⁄
2
, and 2-inch thicknesses.
lAP JOINTS
- Wood
nailers attached to GPI
curbs consist of notched
and lapped joints to ensure
strength and durability.
FORMED BODY CURB
-
Curbs are perfectly formed
on three sides and have only
one welded seam to ensure a
strong square curb.
CONSTRUCTION
-
Curb sizes under
50 inches square are
18 gauge galvanized
steel or 0.064 aluminum.
Curb sizes 50 inches
square and greater are
16 gauge galvanized
steel or 0.080 aluminum.
OPTIONAl DAMPER TRAY
-
Designed to hold a standard
Greenheck damper. The design
includes flanges, which allow the
damper to be placed in the tray
and fastened.
OPTIONAl COATINGS
-
A wide variety of coatings and
colors are available:
Decorative coatings are available in
sixteen standard colors.
Protective coatings are available
in five electrostatically applied
powders providing a selection for
most environments.
All coatings and relative resistance
charts can be found in Greenheck’s
Product Application Guide for
Performance Coatings for Ventilation
Products.
OPTIONAl SECURITY BARS
-
Model GPI with security bars is
available up to 50 by
92 inches to prevent
unlawful entry. The bars
consist of 1/2-inch diameter
A-36 mild steel, welded
6 inches apart from one
another and are powder
coated.
OPTIONAl CURB SEAl
- This rubber seal between
the fan and the curb cap is available to ensure
proper performance of the fan. The seal also helps
prevent insects and moisture from entering and
reduces vibration transmission in the ductwork.
OPTIONAl lINER (Double Shell)
- Available for
installations where it is not desirable for insulation
to be exposed to the airstream.