Operating Window Weights

R.O.
Width
9 7/8
17 1/2
25 1/8
32 3/4
40 3/8
48
55 5/8
63 1/4
70 7/8
78 1/2
Height
Blocks
1
2
3
4
5
6
7
8
9
10
9 7/8
1
14
18
22
27
31
35
39
43
47
52
17 1/2
2
18
27
35
43
52
60
68
76
85
93
25 1/8
3
22
35
47
60
72
85
97
110
122
135
32 3/4
4
27
43
50
76
93
110
126
143
159
176
40 3/8
5
31
52
72
93
114
135
155
176
197
218
48
6
35
60
85
110
135
159
184
 
 
 
55 5/8
7
39
68
97
126
155
184
213
 
 
 
63 1/4
8
43
76
110
143
176
 22221
 
 
 
 
70 7/8
9
47
85
122
159
197
 
 
 
 
 
78 1/2
10
52
93
135
176
218
 
 
 
 
 

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