PM&I: Catalog of Cast Drainage Grates and Frames: R-4370 Series

PACIFIC MARINE & INDUSTRIAL

Engineering Department Email:

Drainage Grates
R-4370 Series

Type C

Type D

Type E

Type G

Heavy Duty Round Drainage Grates

Most grates listed can be furnished with lightweight cast iron angle frames when specified.

Frame is of 1/2” metal as shown on page 266.

Dimensions in Inches
Catalog
No.	A	B	G	H	Type
R-4370-1	6 3/8	1 1/4	1 x 1	1 / 2	C
R-4370-2	9 1/2	2 1/2	1 1/2 x 3 1/2	7 / 8	G
R-4370-3§	15	1 1/4	1 x 12 1/4	1	E
R-4370-4	15	1 1/4	3/4 x 2 1/4	3 / 4	G
R-4370-5	18	1 1/2	1 x 4 1/2	1 1/4	G
R-4370-6*	19 1/2	1 1/2	3/4 x 5 1/4	3/ 4	G
R-4370-7	20	1 3/8	2 x 2	1	G
R-4370-8	21	1 1/4	3/4 x 19 1/2	3/ 4	E
R-4370-9	22	1 1/2	1 1/8	1	C
R-4370-10	22	1 1/2	1 1/4	1	D
R-4370-12	22	1 1/2	1 3/8 x 5	1	F
R-4370-13*	22	1 1/2	2 x 6	1 1/4	G
R-4370-15	22 1/2	1 3/4	1 1/8	1	D
R-4370-17	22 3/4	1 3/4	1 1/2	1	D
R-4370-18§	22 3/4	1 3/4	1 1/2	7 / 8	E
R-4370-21	23	1 1/2	1 1/4	1	D
R-4370-22	23	1 3/4	1	1 1/8	D
R-4370-23	24	1 1/2	2 1/4 x 2 1/4	1 1/2	Special
R-4370-25	29	3	3 / 4	1	G
R-4370-26	33	2	1 1/2	1	G
R-4370-27A	38	1 1/2	1	1	G
§Not recommended for bicycle traffic.
*Rated as Light Duty - not Heavy Duty.

To Calculate Drainage Water Flow

Listed by Product Number

SINCE 1985