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Lower hinge
(2 pieces)
1/4 - 20 x 1 1/2” screws
(4 pieces)
Butterfly damper wheel
(2 pieces)
1/4” Flange nuts 1/4- 20 x 3/4” screws
(2 pieces) (2 pieces)
Attach butterfly damper wheels on outside of grill using two ¼ - 20 x -3/4" screw and two 1/4" flange nut ,d o not fully
tighten the flange nut, this will allow for s mooth rotation of the damper.
Attach the lower hinges to back pan el by using four ¼ - 20 x 1 1/2" screws