Drainage Grates: Square and Rectangular

Print This Product

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
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-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