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Slab Type Castings
R-6672 to R-6673 Series
Square and Rectangular Frames and Grates
Heavy Duty—for Slab Construction
Dimensions in inches
Catalog
Frame
No.
A
B
C
E
F
G
H
Type
Square - Heavy Duty
R-6672 - 1
11 7/8 x 11 7/8
1 1/8
10 3/4 x 10 3/4
16 x 16
3 1/2
1 1/2 x 1 1/2
5/8
Y
R-6672 - A
12 1/4 x 12 1/4
1
11 1/2 x 11 1/2
15 x 15
6
1 1/8 x 10
1
Y§
R-6672 - B
13 3/4 x 13 3/4
1 1/2
12 x 12
18 x 18
4
1 x 5 1/2
1
W
R-6672 - C
18 x 18
1 1/2
16 x 16
24 x 24
4 1/2
1 x 4 1/4
1
Y
R-6672 - D
21 1/2 x 21 1/2
1 1/2
20 x 20
26 x 26
4
1 3/8 x 3 5/8
1
W
R-6672 - E
23 1/2 x 23 1/2
1 1/2
22 x 22
28 x 28
4
1 1/2 x 6 3/8
1
W
R-6672 - F**
25 3/4 x 25 3/4
1 1/2
24 x 24
30 x 30
4
1/2 x 4 1/2
1
W
R-6672 - G
27 x 27
2
25 x 25
33 1/2 x 33 1/2
4
1 1/2 x 5
1
Y
R-6672 - H
27 1/2 x 27 1/2
1 1/2
26 x 26
32 x 32
4
1 x 5
1
W
R-6672 - J
30 x 30
1 3/4
28 x 28
34 x 34
4
1 1/2 x 6
1 1/4
Y
R-6672 - K
31 3/4 x 31 3/4
1 1/2
30 x 30
37 x 37
4
1 x 6 3/8
1 1/8
W
R-6672 - M*
37 x 37
1 1/2
36 x 36
42 x 42
4
1 3/4 x 3 1/2
1 1/2
W
R-6672 - Q* †
56 1/2 x 56 1/2
1 1/2
54 x 54
64 x 64
4 1/2
1 1/8 x 12 3/4
1 1/4
Y§
Rectangular - Heavy Duty
R-6673 - A
14 x 20
1 1/2
12 x 18
18 x 24
4
3/4 x 5 1/2
1
W
R-6673 - B
13 1/2 x 25 1/2
1 1/2
12 x 24
18 x 30
4
1 x 4 1/2
1
W
R-6673 - C
19 1/2 x 25 1/2
1 1/2
18 x 24
24 x 30
4
1 x 6 7/8
1
W
R-6673 - D
19 3/4 x 31 3/4
1 1/2
18 x 30
24 x 36
4
2 x 5
1
W
R-6673 - E
19 3/4 x 37 3/4
1 1/2
18 x 36
30 x 42
4
2 x 5
1
W
R-6673 - J
25 1/2 x 31 1/2
1 1/2
24 x 30
30 x 36
4
1 3/8 x 5
1
W
R-6673 - K
25 3/4 x 37 3/4
1 1/2
24 x 36
30 x 42
4
1 3/8 x 5
1
W
R-6673 - L*
25 3/4 x 49 3/4
1 1/2
24 x 48
30 x 54
4
1 5/16 x 6 13/16
1
W
R-6673 - N*
31 3/4 x 37 3/4
1 1/2
30 x 36
36 x 42
4
1 3/8 x 4 5/8
1
W
R-6673 - O*
31 1/2 x 49 1/2
1 1/2
30 x 48
36 x 54
4
1 1/2 x 4 3/4
1
W
R-6673 - Q1*
38 x 50
1 1/2
36 x 48
44 1/2 x 56 1/2
4
1 1/6 x 7 5/8
1
W
*Grate in two pieces.
**Type Q grate.
§Not recommended for bicycle traffic.
†Frame in sections. Bolted in corners.
Free Open Area Tables
To Calculate Drainage Water Flow
Listed by Product Number
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