RACK AND PINION Rack is placed every 6′ – 7′. Allow for 6″ of rack when the vent is fully open. All models have 6″ of rack movement per revolution of drive shaft.
Features • Zinc pinion gear with shoulders to bear the weight and extend the life of the gear • Easy alignment: racks work even with vent is not square • Freedom from corrosion – stainless clevis pins, cotter pins, set screws, cast sash brackets and tough Nylatron bearings • Holes in pinion housing are punched with stamping tool to maintain exact spacing • The PowerRack arm and housing are manufactured using aluminum alloy for strength and freedom from corrosion • Wide load-bearing surfaces • Replaceable parts
Benefits • Lubricate pinion gear annually • Unique design prevents binding • Wide housing allows for vent movement • PowerRack’s precision-cut teeth minimize sharp edges, supporting smooth operation
Straight Power Rack Models
Curved Power Rack Models
Rack Length
Shaft
Part#
Rack Length
Shaft
Part#
18”
1-3/8”
M-2816
28”
1-3/8”
M-2828
18”
1-5/8”
M-2718
28”
1-5/8”
M-2928
28”
1-3/8”
M-2628
36”
1-3/8”
M-2836
28”
1-5/8”
M-2728
36”
1-5/8”
M-2936
36”
1-3/8”
M-2636
42”
1-3/8”
M-2842
36”
1-5/8”
M-2736
42”
1-5/8”
M-2942
42”
1-3/8”
M-2642
48”
1-3/8”
M-2848
42”
1-5/8”
M-2742
48”
1-5/8”
M-2948
48”
1-3/8”
M-2648
53”
1-3/8”
M-2853
48”
1-5/8”
M-2748
53”
1-5/8”
M-2953
53”
1-3/8”
M-2653
66”
1-3/8”
M-2866
53”
1-5/8”
M-2753
66”
1-5/8”
M-2966
66”
1-3/8”
M-2666
72”
1-3/8”
M-2872
66”
1-5/8”
M-2766
72”
1-5/8”
M-2972
72”
1-3/8”
M-2672
72”
1-5/8”
M-2772
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