#
Drainage Grates: Square and Rectangular

Neenah Foundry offers a variety of cast iron square drainage grates. Select from the list below to find the square drainage grates that fit your needs.

R-4400 to R-4899 Series+

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##
R-4400 to R-4899 Series

###
Square & Rectangular Drainage Grates

The gratings in this series are rated heavy duty when supported on all four sides.

Other special sizes quoted on request in the event none of the standards shown in this series meet your requirements. In ordering replacement grates to be used on existing catch basins, be sure to specify the exact size of opening in which the grate will be used.

Many of the grates in this series can be adapted to trench frames with support on two sizes. Most are qualified as heavy duty when the short dimension spans the trench.

Advise loading requirements so we can assist you with your choice.

##
Square — Heavy Duty

Catalog Number |
A |
B |
G |
H |
Type |

* Angle frame available
** Grate in two pieces
*** Grate in three pieces
+ Available with riverwalk style grate
† Grate lettered "DUMP NO WASTE – DRAINS TO RIVER" |

R-4400-A * |
8 x 8 |
1 |
1 x 5-1/4 |
1 |
A |

R-4401 * |
8 x 8 |
1 |
3/8 x 3 |
3/8 |
A |

R-4408 * |
10-1/4 x 10-1/4 |
1 |
7/8 x 8-1/4 |
1 |
B |

R-4441-1 * |
12 x 12 |
1 |
3/8 x 4-1/2 |
1 |
Q |

R-4511 * |
14 x 14 |
1-1/2 |
1-1/2 x 5-1/8 |
1-1/8 |
A |

R-4550 * |
15 x 15 |
1-1/4 |
3-1/2 x 3-1/2 |
3/4 |
H |

R-4552 * |
16 x 16 |
1-3/4 |
1-1/4 x 6-1/4 |
1-1/4 |
A |

R-4557 * |
16 x 16 |
1-1/4 |
1-3/16 x 3-3/8 |
3/4 |
A |

R-4558 * |
17-5/8 x 17-5/8 |
1-1/4 |
1 x 5 |
1/2 |
C |

R-4660 * |
18 x 18 |
1-1/2 |
3 x 4 1/2 |
1-1/4 |
C |

R-4662 |
19-3/4 x 19-3/4 |
2-1/2 |
1-3/8 x 8-1/2 |
1 |
A |

R-4720 * |
20 x 20 |
1-3/4 |
1-3/8 x 3-1/2 |
1-1/4 |
C |

R-4721-A * |
21 x 21 |
1-3/4 |
1-1/2 x 8 |
1-1/4 |
A |

R-4725 * |
21 x 21 |
2 |
3 x 3 |
1 |
H |

R-4760 * |
22 x 22 |
1-3/4 |
3 x 5-1/5 |
1 |
C |

R-4765 |
23 x 23 |
2 |
1 x 6-1/2 |
1 |
A |

R-4766 |
21 x 28 3/4 |
2 1/2 |
1 x 17 |
1 1/8 |
B |

R-4780-A ** |
22 x 44 |
1-3/4 |
3 x 5-1/2 |
1-1/16 |
C |

R-4808-A * |
24 x 24 |
2 |
1/2 x 4-1/2 |
1-5/8 |
Q |

R-4810 *+ |
24 x 24 |
2 |
1-3/4 x 6 |
1-1/4 |
C |

R-4820 * ¥ |
24 x 24 |
2 |
1-3/4 x 5-7/8 |
1-3/8 |
C |

R-4826 ** |
24 x 24 |
2 |
1 x 6 |
1-1/4 |
A |

R-4832 * |
24 x 24 |
1-5/8 |
1-1/16 x 4-3/4 |
1 |
C |

R-4832-B * |
26 x 26 |
1-3/4 |
1-1/16 x 4 |
1 |
C |

R-4833 * |
26 x 26 |
2 |
2 x 7 |
1 |
A |

R-4836 |
26 x 26 |
2 |
1-1/8 x 4-3/4 |
1-1/4 |
C |

R-4850 * |
27 x 27 |
2 |
2-1/2 x 7-1/2 |
1 |
C |

R-4852 * |
27 x 27 |
2 |
1-1/2 x 5 |
1 |
C |

R-4852-A * |
27 x 27 |
1 |
1-1/2 x 5 |
1 |
C |

R-4859-C * |
27-1/2 x 27-1/2 |
1 |
2 x 7 |
1 |
A |

R-4859-Q * |
27-1/2 x 27-1/2 |
1 |
3/8 x 7 |
1-1/8 |
Q |

R-4859-S * |
27-1/2 x 27-1/2 |
1 |
1-1/2 x 4-3/4 |
1 |
S |

R-4871 * † |
27-1/2 x 27-1/2 |
1 |
2 x 24 |
1 |
B |

R-4880 * |
28 x 28 |
2 |
1-1/2 x 7-1/4 |
1 |
C |

R-4880-C * |
30 x 30 |
1-1/2 |
1-1/4 x 5-7/8 |
1-1/4 |
C |

R-4882 * |
34 x 34 |
2 |
2 x 14 1/2 |
1-1/8 |
A |

R-4882-A * |
34 x 34 |
2 |
1 x 9 |
1-1/8 |
A |

R-4884-A * ** |
36 x 36 |
1-3/4 |
2 x 4 |
1-3/8 |
C |

##
Rectangular — Heavy Duty

Catalog Number |
A |
B |
G |
H |
Type |

• Light Duty
¥ Convex
+ Dump No Waste Drains to Waterway
Meets traffic load called for in AA-6005 of 25,000# proof load |

R-4389-O |
6 x 12 |
1-1/4 |
3/4 x 4-1/2 |
1 |
B |

R-4390 |
6 x 24 |
1 |
3/4 x 2-1/8 |
1 |
B |

R-4403 |
8 x 14 |
1 |
1-1/2 x 5-7/8 |
1/2 |
A |

R-4404-C |
8 x 24 |
1 |
1/16 x 6 |
1 |
B |

R-4406 |
8 x 24 |
1-3/4 |
5/16 x 2-5/8 |
1 |
B |

R-4406-1 |
8 x 24 |
1-3/4 |
1 x 5 |
3/4 |
A |

R-4406-2 |
8 x 24 |
1-3/4 |
1 x 2 |
1 |
C |

R-4406-C |
9-1/4 x 23-7/8 |
1 |
1 x 2-7/8 |
1 |
A |

R-4406-P |
9 x 23-7/8 |
1-1/2 |
1/4 x 2-5/16 |
1 |
P |

R-4407-2A |
9-1/2 x 24 |
1-3/4 |
1 x 7-1/2 |
1 |
B |

R-4409 |
10 x 17-3/4 |
1-1/2 |
1 x 3-1/2 |
1 |
A |

R-4409-A |
10 x 24 |
1-3/4 |
1-1/4 x 4-3/4 |
1 |
C |

R-4409-C * |
10 x 24 |
1-3/4 |
1 x 7 |
1 |
B |

R-4409-E * |
10 x 24 |
1-3/4 |
1 x 3-1/2 |
1 |
A |

R-4409-G |
10 x 24 |
1-1/2 |
2 x 8 |
1 |
B |

R-4421 * |
10 x 40 |
1-1/8 |
1-1/4 x 8-1/2 |
1 |
C |

R-4423-A |
10-1/4 x 48 |
1-5/8 |
1-1/2 x 3-1/2 |
1 |
A |

R-4424 |
10-1/2 x 23-1/8 |
1-3/4 |
2 x 2 |
1 |
H |

R-4430-1 |
11 x 23-7/8 |
1-1/8 |
1/4 x 3-5/16 |
1 |
P |

R-4430-A |
11 x 24 |
1-1/2 |
3/4 x 4-1/8 |
3/4 |
A |

R-4430-B |
11-1/2 x 24 |
1-1/2 |
1 x 6-5/8 |
1 |
C |

R-4435-1 |
11-7/8 x 14 |
2 |
1 x 5-1/2 |
1 |
C |

R-4443 |
12 x 14 |
1-3/4 |
1-1/2 x 5-1/4 |
1-1/4 |
A |

R-4449 * |
12 x 24 |
1-1/2 |
1-1/2 x 4-1/4 |
1 |
A |

R-4450 * |
12 x 24 |
1-3/4 |
1 x 4-1/2 |
1 |
A |

R-4450-A * |
12 x 24 |
1-3/4 |
2 x 2 |
1 |
H |

R-4451 * |
12 x 24 |
2 |
1-1/2 x 3-3/4 |
1 |
C |

R-4454 |
12 x 26 |
1-1/2 |
1/2 x 11-1/2 |
1/2 |
C |

R-4460 * |
12 x 30 |
2 |
1-1/4 x 4 |
1 |
A |

R-4462 * |
12 x 35-3/4 |
1-1/2 |
3/4 x 9 |
1 |
B |

R-4470 * |
12 x 48 |
1-3/4 |
1 x 4-1/2 |
1 |
A |

R-4523 |
14 x 23-7/8 |
1 |
1-1/16 x 5-1/2 |
1 |
A |

R-4525 * |
14 x 24 |
2 |
1 x 5-1/2 |
1 |
A |

R-4530 |
14-1/2 x 22 |
2 |
1-1/2 x 5-1/2 |
1-1/4 |
A |

R-4531 |
14-1/2 x 23-7/8 |
1 |
1 x 5 |
1 |
A |

R-4540 |
14-1/2 x 26-1/2 |
2 |
2-1/4 x 4 |
1 |
C |

R-4541 * |
14-1/2 x 28 |
1-3/4 |
1-1/4 x 5 |
1-1/4 |
A |

R-4544 |
14-1/2 x 37-3/4 |
1-3/4 |
2 x 5-3/8 |
1-1/4 |
A |

R-4545 |
14-1/2 x 48 |
1-3/4 |
1-1/4 x 5 |
1-1/4 |
A |

R-4548 |
15 x 20-1/2 |
1-1/2 |
2 x 2 |
3/4 |
H |

R-4570-1 |
15 x 23 |
1-3/4 |
1-1/2 x 5-1/2 |
1-1/8 |
A |

R-4570-2 |
15 x 23-7/8 |
1-1/2 |
1 x 6 |
1 |
A |

R-4573 * |
15 x 30 |
2-1/2 |
1-1/8 x 5-1/2 |
1 |
A |

R-4575-A * |
15 x 36 |
1-3/4 |
1-13/16 x 6-1/2 |
3/4 |
A |

R-4579 |
15-1/8 x 23 |
1-1/2 |
1-3/8 x 5-1/2 |
1-3/8 |
A |

R-4583 |
15-1/2 x 22-1/4 |
1-3/4 |
1-5/8 x 5-1/2 |
1-3/8 |
A |

R-4584 |
15-1/2 x 36 |
1-3/4 |
1-1/2 x 5-1/4 |
1-3/8 |
A |

R-4585 |
15-1/2 x 39 |
1-3/4 |
1-7/8 x 5-7/8 |
1-1/4 |
A |

R-4586 * |
15-3/4 x 36 |
1-3/4 |
1-1/2 x 5-1/4 |
1-3/8 |
A |

R-4600 |
16 x 23 |
2 |
1-1/4 x 3-3/4 |
1 |
A |

R-4603-A * |
16 x 24 |
1-1/8 |
3/4 x 5-1/2 |
1 |
A |

R-4604 |
16 x 24 |
1-1/2 |
2 x 4 |
7/8 |
C |

R-4604-C * |
16 x 24 |
2 |
2 x 5 |
2 |
A |

R-4604-D |
16 x 24 |
2-1/2 |
2-1/2 x 6-5/8 |
3/4 |
A |

R-4608 |
16-1/2 x 19-3/4 |
1-1/2 |
1-1/4 x 6 |
1 |
A |

R-4610 |
16-1/2 x 22 |
1-3/4 |
1-1/2 x 4 |
1 |
A |

R-4620 |
17 x 19 |
2 |
1-1/4 x 4-1/4 |
1-1/8 |
A |

R-4630 |
17 x 20 |
1-1/2 |
1-1/4 x 6-1/2 |
1 |
C |

R-4632 |
17 x 21 |
2 |
1-3/8 x 8-3/4 |
1 |
C |

R-4640 |
17 x 21-1/2 |
1-3/4 |
2-1/2 x 4-1/4 |
1 |
A |

R-4641 |
17 x 23-7/8 |
1 |
1-1/16 x 7 |
1 |
A |

R-4641-A * |
17 x 24 |
2 |
1 x 7 |
7/8 |
A |

R-4641-C * |
17 x 24 |
2 |
1 x 6-1/2 |
1 |
C |

R-4641-F * |
17 x 34 |
1-1/2 |
1-1/2 x 6-3/4 |
1 |
A |

R-4649 |
17-1/4 x 24 |
1-3/4 |
1 x 6-1/2 |
1 |
A |

R-4652 * |
17-3/4 x 29-3/4 |
2 |
1-1/2 x 4-1/2 |
1-1/8 |
A |

R-4670-A * |
18 x 24 |
1-1/2 |
1-1/8 x 6-3/4 |
1-1/8 |
A |

R-4671 * |
18 x 24 |
2 |
1 x 6-1/2 |
1/16 |
A |

R-4672 * |
18 x 24 |
2 |
1-3/8 x 4-1/2 |
1-1/8 |
C |

R-4689 * |
18 x 27-1/4 |
2 |
2 x 6-3/4 |
1 |
C |

R-4692-A |
18 x 34 |
2-1/4 |
1-7/16 x 8 |
1 |
C |

R-4698 * |
18 x 36 |
1-3/4 |
2 x 4 |
1-3/8 |
A |

R-4710 *+ |
17-3/4 x 35-3/4 |
2 |
1-3/4 x 6-1/4 |
1-1/8 |
C |

R-4711 * |
18 x 39 |
2 |
1-1/4 x 5-1/2 |
1-1/4 |
C |

R-4718 |
18-3/4 x 36-3/4 |
2 |
2 x 8 |
1 |
A |

R-4730 • |
19-1/2 x 32 |
1-1/2 |
2 x 5 |
1 |
A |

R-4731 • |
19-1/2 x 39 |
1-1/2 |
2 x 4-1/2 |
1 |
C |

R-4732 |
19-1/2 x 39 |
1-3/4 |
1 x 7-1/2 |
1 |
A |

R-4735 |
20 x 23-7/8 |
1 |
1/16 x 8-1/4 |
1 |
A |

R-4736 * |
20 x 24 |
2 |
1-1/2 x 2-1/2 |
1-1/4 |
C |

R-4738 * |
20 x 24 |
2 |
1 x 5 |
1 |
A |

R-4739 * |
20 x 24 |
2 |
1-1/8 x 4-3/4 |
1 |
C |

R-4740 * |
20 x 28-1/2 |
2 |
1-3/4 x 8-1/4 |
1 |
C |

R-4750 * |
20 x 30 |
2 |
1-3/4 x 6-1/4 |
1 |
C |

R-4750-1 |
20 x 48 |
2 |
1-1/2 x 5 |
1 |
A |

R-4751 |
20-1/2 x 27 |
2 |
1-3/4 x 5-1/2 |
1 |
C |

R-4752 |
20-1/2 x 36 |
1-7/8 |
2 x 5-3/4 |
1-1/8 |
C |

R-4755-B * |
21 x 42 |
1-1/2 |
1-1/2 x 5-1/2 |
1 |
A |

R-4755-C * |
21 x 42 |
1-1/2 |
1-1/2 x 5-7/8 |
1 |
C |

R-4759 |
22 x 23 |
1-3/4 |
1-1/2 x 6 |
1 |
C |

R-4762 * |
22 x 30 |
1-1/2 |
2 x 6-1/4 |
1 |
C |

R-4780 * |
22 x 37 |
2 |
2 x 8 |
1 |
C |

R-4780-A ** |
22 x 44 |
1-3/4 |
3 x 5-1/2 |
1-1/16 |
C |

R-4781 * |
22 x 48 |
2-1/2 |
1-5/8 x 5-3/8 |
1-1/4 |
C |

R-4795 * |
22-1/2 x 45 |
1-1/2 |
2 x 6 |
1 |
A |

R-4798 |
23-1/4 x 36-1/2 |
2-3/4 |
1-1/2 x 7-1/4 |
1 |
C |

R-4821-A * |
23-7/8 x 26 |
2 |
9/16 x 4-15/16 |
1-1/4 |
C |

R-4825 * |
24 x 30 |
1-1/2 |
1-1/2 x 4-1/4 |
1-1/4 |
C |

R-4825-A * |
24 x 30 |
2-1/4 |
1-1/4 x 4-3/4 |
1 |
A |

R-4825-B * |
24 x 30 |
2-1/4 |
1-1/2 x 6 |
1 |
C |

R-4828 * |
24 x 33 |
2-1/4 |
1 x 4-1/2 |
1 |
A |

R-4829 * |
24 x 33 |
2-1/4 |
1-1/2 x 6-1/2 |
1-1/4 |
C |

R-4837 |
24 x 35 |
2-1/2 |
1-1/2 x 6-1/2 |
1-1/2 |
A |

R-4839 * |
24 x 35-7/8 |
1-3/4 |
7/8 x 9-3/4 |
1 |
A |

R-4840 * |
24 x 36 |
2 |
2 x 4-3/4 |
1 |
C |

R-4843 * |
24 x 36 |
1-3/4 |
1-3/4 x 6 |
1 |
A |

R-4853 |
24 x 39 |
2-1/2 |
1-3/4 x 5-3/4 |
1-5/8 |
A |

R-4853-A |
24 x 45 |
3 |
1-1/2 x 6-1/4 |
1-1/4 |
A |

R-4853-B1 |
24 x 51 |
3 |
1-1/2 x 5 |
1-1/4 |
C |

R-4855 |
26 x 30 |
2 |
1-1/2 x 5 |
1-1/4 |
A |

R-4857 |
26 x 45 |
2 |
1-1/2 x 5-1/2 |
1 |
A |

R-4890 * |
28 x 37 |
2 |
1-3/4 x 7-5/8 |
1-1/4 |
C |

R-4891 ** |
30 x 48 |
1-1/2 |
1-1/2 x 4-1/4 |
1-1/4 |
A |

R-4893 *** |
30 x 78 |
2 |
1-1/2 x 5 |
1-1/4 |
C |

R-4893-B * |
32 x 34 |
2 |
1 x 2 |
1 |
C |

R-4894 * |
33 x 36 |
2 |
1-1/2 x 6-1/2 |
1-1/4 |
C |

R-4895-2 ** |
36 x 66 |
2 |
1-1/2 x 6-1/2 |
1-1/4 |
A |

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