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Inlets for Roll Type and Mountable Curbs
R-3501-D2A R-3501-E2

Inlet for Roll Type Curb

Inlet for Roll Type Curb

20 x 16 Inch Inlet 23 1/2 x 18 3/4 Inch Inlet
   
R-3501-HL R-3501-H4

Mountable Curb Frame and Grate

Inlet for Roll Type Curb

29 x 35 Inch Inlet 29 x 35 Inch Inlet
   
R-3501-L1A R-3501-L2

Inlet for Roll Type Curb

Inlet for Roll Type Curb

23 1/8 x 23 1/4 Inch Inlet 26 x 23 1/2 Inch Inlet
   
R-3501-M R-3501-N

Inlet for Roll Type Curb

Inlet for Roll Type Curb

24 x 28 1/8 Inch Inlet 23 1/4 x 23 1/4 Inch Inlet
   
R-3501-P R-3501-PR

Inlet for Roll Type Curb

Inlet for Roll Type Curb

25 3/4 x 19 Inch Inlet 25 3/4 x 19 Inch Inlet
   
R-3501-R R-3501-TB

Inlet for Roll Type Curb

Inlet for Roll Type Curb

28 5/8 x 28 5/8 Inch Inlet 35 1/2 x 26 29/32 Inch Inlet
   
R-3501-TR R-3501-U

Inlet for Roll Type Curb

Inlet for Roll Type Curb

26 x 23 1/2 Inch Inlet 22 1/8 x 36 Inch Inlet
   
R-3502 Series R-3502-D2

Inlet for Roll Type Curb

Inlet for Roll Type Curb

22 x 23 Inch Inlet (various sizes) 22 x 22 3/4 Inch Inlet
   
R-3503-A R-3503-B

Inlet for Roll Type Curb

Inlet for Roll Type Curb

28 3/4 x 17 1/4 Inch Inlet 26 3/4 x 17 1/4
   
R-3504-F R-3506 to R-3517 Series

Inlet Frame and Double Grate

Inlet Frames and Grates for

for Driveway and Mountable Curb Driveway and Mountable Curb
48 x 18 1/2 Inch Inlet Various Sizes
   
R-3516 R-3516-1

Inlet Frame, Grate for

Same as R-3516
Driveway and Mountable Curb Except Single Unit
48 x 26 1/16 Inch Inlet 22 1/2 x 26 1/16 Inch Inlet
   
R-3525-L R-3526-L

Expressway Inlet For Barrier

Expressway Inlet For Barrier

or Mountable Curb or Mountable Curb
24 x 16 1/4 Inch Inlet 24 x 22 1/4 Inch Inlet
   
R-3527-M R-3527-V

Expressway Frame and Grates

Median Barrier Inlet Frame,

48 x 22 1/2 Inch Inlet Grate and Curb Box
  22 3/4 x 22 1/2 Inch Inlet
   
R-3528-V R-3529-V

Median Barrier Inlet Frame, Grate, Curb Box

Double Median Barrier Frames and Grates

24 x 24 Inch Inlet 48 x 24 Inch Inlet
   
R-3531-A and R-3531-B R-3531-C and R-3531-D

Turnpike Inlet Frame and Double Grate

Turnpike Single Inlet Frame and Grate

50 1/4 x 31 Inch Inlet 31 x 23 1/2 Inch Inlet
   
R-3531-E R-3540

Turnpike Single Inlet Frame and Grate

Gutter Inlet Frame and Grate

50 x 26 Inch Inlet 33 x 34 1/4 Inch Inlet
   
R-3540-2 R-3541

Double Gutter Inlet Frame and Grate

Gutter Inlet Frame and Double Grate

68 1/2 x 32 1/2 Inch Inlet 49 1/2 x 21 5/8 Inch Inlet
   
R-3541-2 R-3550-2

Double Gutter Inlet Frame

Double Gutter Inlet Frame and Grate

and Multiple Grates 49 x 46 Inch Inlet
111 3/4 x 21 5/8 Inch Inlet  
   
R-3555 R-3560

Gutter Inlet Frame, Grate

Gutter Inlet Frame and Grate

19 x 13 Inch Inlet 25 1/4 x 25 1/4 Inch Inlet
   
R-3561 R-3562

Gutter Inlet Frame and Grate

Gutter Inlet Frame and Grate

31 1/4 x 31 1/4 Inch Inlet 26 x 26 Inch Inlet
   
R-3563-L R-3563-HB

Gutter Inlet Frames, Grate

Gutter Inlet Frames, Grate

20 x 24 Inch Inlet 20 x 24 Inch Inlet
   
R-3570 R-3570-A

4 Flange Gutter Inlet Frame and Grate

4-Flange Gutter Inlet Frame, Grate

21 x 23 3/16 Inch Inlet 21 x 23 3/16 Inch Inlet
   
R-3571 R-3571-A

3-Flange Gutter Inlet Frame, Grate

3-Flange Gutter Inlet Frame, Grate

21 x 23 3/16 Inch Inlet 21 x 23 3/16 Inch Inlet
   
R-3572 Series R-3572-A

4-Flange Gutter Inlet Frame, Double Grate

4-Flange Gutter Inlet Frame

50 3/8 x 28 3/4 Inch Inlet and Diagonal Bar Grate
  47 3/4 x 26 1/2 Inch Inlet
   
R-3573-2D R-3573-2L

3-Flange Gutter Inlet Frame and Double Grate

3-Flange Gutter Inlet Frame, Double Grate

48 13/16 x 26 1/2 Inch Inlet 48 13/16 x 26 1/2 Inch Inlet
   
R-3573-2Q R-3574-2D

3-Flange Gutter Inlet Frame

4-Flange Gutter Inlet Frame

and Double Grate and Double Grate
48 13/16 x 26 1/2 Inch Inlet 45 9/32 x 26 1/2 Inch Inlet
   
R-3574-2L R-3574-2Q

4-Flange Gutter Inlet Frame

4-Flange Gutter Inlet Frame

and Double Grate and Double Grate
45 9/32 x 26 1/2 Inch Inlet 45 9/32 x 26 1/2 Inch Inlet
   
R-3575 R-3576

Gutter Inlet Frame and Grate

Gutter Inlet Frame and Grate

33 3/4 x 21 3/4 Inch Inlet 36 x 20 Inch Inlet
   
R-3577 R-3578

Gutter Inlet Frame and Grate

Gutter Inlet Frame and Grate

34 1/2 x 20 1/2 Inch Inlet 40 x 25 1/8 Inch Inlet
   
R-3580 R-3580-1

Gutter Inlet Frame and Grate

Double Inlet Frame and Grate

29 3/4 x 17 3/4 Inch Inlet 63 1/2 x 17 3/4 Inch Inlet
   
R-3581 R-3588

Gutter Inlet Frame and Grate

4-Flange Gutter Inlet Frame, Grate

33 3/4 x 21 3/4 Inch Inlet 24 1/4 x 23 7/8 Inch Inlet
   
R-3588-A R-3588-LL

4-Flange Gutter Inlet Frame and Grate

4-Flange Gutter Inlet Frame and Grate

23 7/8 x 23 7/8 Inch Inlet 23 7/8 x 23 7/8 Inch Inlet
   
R-3588-LL4 R-3589

4-Flange Gutter Inlet Frame and Grate

3-Flange Gutter Inlet Frame and Grate

23 7/8 x 23 7/8 Inch Inlet 23 7/8 x 23 7/8 Inch Inlet
   
R-3589-A R-3589-LL

3-Flange Gutter Inlet Frame and Grate

3-Flange Gutter Inlet Frame and Grate

23 7/8 x 23 7/8 Inch Inlet 23 7/8 x 23 7/8 Inch Inlet
   
R-3589-LL4 R-3591

3-Flange Gutter Inlet Frame and Grate

Gutter Inlet Frame and Grate

23 7/8 x 23 7/8 Inch Inlet 24 x 24 Inch Inlet
   
R-3593 R-3599 Series

Double Unit Inlet Frame, Grate

Slotted Vane Drain, Sheetflow

59 1/2 x 14 1/2 Inch Inlet 3 3/4 x Continuous Length
 
Free Open Area Tables
To Calculate Drainage Water Flow
Listed by Product Number
 

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