The three zone horizontal ComfortPLENUM™ with the bypass damper on the right is 21 in x 21 in x 5 ft long. This plenum has four dampers; two are placed on the right side and two are placed on the left side (as shown). Installers simply cut a circular hole in the sheet metal using the cutting guide decal to choose the size of their hole from 6 to 16 in round or rectangular. The cutting guide is located on the sheet metal directly in front of the damper. The damper is mounted on the inside of the plenum directly behind the cutting guide. Once the hole is cut and the insulation is trimmed away, the damper blades will be showing. Duct-tab or spin-in starting collars may be installed into the holes. The plenum may be rotated 90 deg to the right or to the left so that two zone dampers are on the top and two dampers are on bottom to avoid framing, maintain better air flow or other reason that is beneficial to the application. Also, in applications where equipment is above removable ceiling tile, the plenum can be rotated 180 deg so that the motors are accessible from the bottom. Any of the dampers can be used as the bypass damper. This modulating bypass damper assures the correct duct pressure through the dampers that are open.

Comfort PRODUCTS Horizontal Duct Plenum, Sheet Metal, 5 ft Length, 21 in Width, 21 in Height

• Works with most zoning systems
• 2 in duct liner, glued then pin-spotted
• Dampers with power open/power close motors
• Adjust motors to any maximum and/or minimum position
• Includes extra damper for modulating bypass
• Cutting guide allows from 6 in through 16 in round holes for duct take-offs
• Cutting guide allows up to a 16x16 in rectangular opening for duct take-offs
• Damper motors include red and green LED's to indicate opening, closing, full open or full close
• All damper blades are gear-driven using opposed blade action for even airflow
• 1/2 in gasket material adds extra insulation to the damper gear box