10To calculate the length of the system you need, add theequivalent feet (meters) for each vent piece used in the system. Example Vent SystemThe following example falls within the maximum vent length of35 ft (8.9 m).Install Vent System1. Place cardboard or similar material on top of a flat surfacewhere you can easily assemble the downdraft vent system.2. Remove parts packages, downdraft vent and blower boxfrom the carton.3. Remove all shipping materials, tape and film from thedowndraft vent and blower box.4. Install the right and left undercounter mounting brackets tothe vent box. Slide the keyhole slots over the guide tabs andpush the brackets up to set them into place.Vent Piece3¹⁄₄" x 10" (8.3 cm x 25.4 cm)Rectangular3¹⁄₄" x 10" (8.3 cm x 25.4 cm)90° elbow5.0 ft(1.5 m)3¹⁄₄" x 10" (8.3 cm x 25.4 cm)flat elbow12.0 ft(3.7 m)3¹⁄₄" x 10" (8.3 cm x 25.4 cm)wall cap0.0 ft(0.0 m)Vent Piece 6" (15.2 cm) Round45° elbow 2.5 ft(0.8 m)90° elbow 5.0 ft(1.5 m)6" (15.2 cm)wall cap0.0 ft(0.0 m)3¹⁄₄" x 10" (8.3 cm x 25.4 cm)to 6" (15.2 cm) transition4.5 ft(1.4 m)6" (15.2 cm) to 3¹⁄₄" x 10"(8.3 cm x 25.4 cm) transition1 ft(0.3 m)3¹⁄₄" x 10" (8.3 cm x 25.4 cm)to 6" (15.2 cm) 90° elbowtransition5.0 ft(1.5 m)6" (15.2 cm) to 3¹⁄₄" x 10"(8.3 cm x 25.4 cm) 90° elbowtransition5.0 ft(1.5 m)A. Blower motorB. TransitionC. 90° elbowsD. Back draft damper2 - 90° elbow = 10.0 ft (3 m)1 - wall cap = 0.0 ft (0.0 m)8 ft (2.4 m) straight = 8.0 ft (2.4 m)Transition = 4.5 ft (1.4 cm)Length of 6" (15.2 cm) or 3¹⁄₄" x 10"(8.3 cm x 25.4 cm) system= 22.5 ft (6.8 m)A. Vent boxB. Undercounter mounting bracketC. Keyhole slotsD. Guide tabsA BC 6 ft(1.8 m)2 ft (0.6 m)DWARNINGExcessive Weight HazardUse two or more people to move and installdowndraft vent.Failure to do so can result in back or other injury.BCDA