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+

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.

R-4400 to R-4899 Series Square & Rectangular Drainage Grates

Square — Heavy Duty

Catalog Number A B G H Type
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
* Angle frame available
** Grate in two pieces
*** Grate in three pieces
+ Available with riverwalk style grate
† Grate lettered "DUMP NO WASTE – DRAINS TO RIVER"

Rectangular — Heavy Duty

Catalog Number A B G H Type
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
• Light Duty
¥ Convex
+ Dump No Waste Drains to Waterway
Meets traffic load called for in AA-6005 of 25,000# proof load

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All dimensions are listed in inches unless otherwise noted.

To order Neenah Foundry products, please call 800.558.5075.

Drainage Grates

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