Greenheck GCI-402 Installation Manual

Combination Intake Louver/Backdraft Damper

J Blade

Application and Design

GCI-402 is a combination weather louver and gravity backdraft
damper designed to protect air intake openings in building
exterior walls. Design incorporates a drainable head member,
J style stationary louver blades, pressure/gravity operated
damper blades and sloped sill to provide maximum resistance
to rain and weather. Recommended application is in close
proximity (preferably ducted) to an intake air fan as pressures
required to operate the GCI-402 may exceed pressure
differentials available without an adjacent fan. This model is not
recommended for barometric intake applications.

Standard Construction

Frame . . . . . . . .Heavy gauge extruded 6063-T5 aluminum,

4 in. x 0.081 in. nominal wall thickness

Blades . . . . . . . .Louver blade: J style design, heavy gauge

extruded aluminum, 0.081 in. nominal wall
thickness, positioned at 45º angles on
approximately 4 in. centers
Backdraft damper blade: heavy gauge
extruded 6063-T5 aluminum, 0.062 nominal
wall thickness

Temperature

Restrictions . . . .(-20º F) - (+180ºF)

Bearings . . . . . .Synthetic sleeve type

Insect screen . . 3/4 in. x 0.051 in. fl attened expanded

aluminum in removable frame,
inside mount (rear)

Finish . . . . . . . . .Mill

Minimum Size . . 12 in. W x 12 in. H

Maximum Single
Section Size . . .60 in. W x 120 in. H

GCI-402

Options (at additional cost)

• A variety of bird and insect screens

• A variety of architectural finishes including:
Clear anodize
Integral color anodize
Baked enamel paint
Kynar paint

• Extended sill

• Flange frame

*Width and height dimensions are actual.

GCI-402PERFORMANCE DATA

Combination Intake Louver/Backdraft Damper

Extruded Aluminum

Typical Application