5
Attach butterfly damper wheels on outside of grill using two ¼ - 20 x -3/4" screw and two 1/4" flange nut ,do not fully
tighten the flange nut, this will allow for smooth rotation of the damper.
1/4" Flange nuts
(2 pieces)
6
Attach the lower hinges to back panel by using four ¼ - 20 x 1 1/2" screws
Lower hinge
(2 pieces)
1/4 - 20 x 1 1/2" screws
(4 pieces)
Page 10
1/4- 20 x 3/4" screws
Butterfly damper wheel
(2 pieces)
(2 pieces)