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Catch Basin Grates

CATCH BASIN INLETS

  • Bottom flange frame to rest on concrete structure

  • Designed for H-20 traffic loading

  • Most available with solid covers

  • Options for one piece solid covers: bolted, watertight

Round

Square

Rectangle

ROUND MANHOLE CATCH BASINS

Catalog A B C E F
Number Grate Diameter Grate Thickness Clear Opening Flange OD Frame Height Grate Type Drain Area
Sq. Ft.
MCB-82 13-1/4 1-1/2 11-1/2 17-5/8 4 B 0.4
MCB-162 21-7/8 1-1/2 20-1/4 26-5/8 4 B 1.1
MCB-210 22-3/4 1-1/2 20 25 2-3/4 B,R,BH 1.3
MCB-260 22-3/4 1-1/2 21 32 4 B,R,BH 1.3
MCB-315 22-3/4 1-3/4 21 34 7 R,BH 1.0
MCB-350 22-3/4 1-1/2 21 35 7 B,R,BH 1.3
MCB-420 24 1-3/16 22 34 7 B 0.9
MCB-275 24 1-3/16 22 30 4 B 0.9
MCB-206 25-1/4 1-1/2 23-1/2 29-1/2 4 B 1.3
MCB-285 26 1-1/2 24 36 4 B,P,BH 1.3
MCB-375 26 1-1/2 24 36 7 B,P,BH 1.3
MCB-520 31-3/4 1-3/8 30 38 4 B 2.4
MCB-455 33-7/8 1-1/2 32-1/4 38-1/2 4 B 2.7
MCB-747 38 2 36 46 6 B 3.3
MCB-900 50-1/4 2 48 56-1/2 6 B 5.3

B = Bar Grate, R = Radial, P = ADA/Pedestrian, BH = Beehive

Other Sizes Available

  • All flat grates designed for H-20 traffic loading

  • All sizes interchangeable with solid covers

  • Options: Bolted

Bar

Radial

Beehive

Pedestrian

SQUARE Catch Basins

Catalog A B C E F
Number Grate Grate Thickness Clear Opening Flange OD Frame Height Grate Type Drain Area
Sq. Ft.
HOE-60-A 11-3/4 x 11/3/4 1-1/4 10 x 10 16 x 16 2-1/2 S 0.4
HOE-165-A 18 x 18 1-1/2 18 x 18 23 x 23 4 S,SC 1.0
HOE-280 24 x 24 1-1/2 22 x 22 29-1/4 x 29-1/4 4 S,SC 1.9
HOE-342 23-5/8 x 23-/5/8 1-1/2 22 x 22 32-3/4 x 32-3/4 6 S,P,DF 1.4
HOE-320 25-3/4 x 25-3/4 1-1/2 24 x 24 31-3/8 x 31-3/8 4 S,P,BH 2.0
HOE-428 30 x 30 1-1/2 28 x 28 34-1/2 x 34-1/2 4 C 2.7
HOE-468 32 x 32 1-1/2 30 x 30 36 x 36 4 CD,SC 2.8
HOE-595 35-1/2 x 35-1/2 1-7/8 33-1/4 x 33-1/4 40-3/4 x 40-3/4 3 CD 3.6
HOE-598 37-1/2 x 37-1/2 1-1/2 36 x 36 43-1/4 x 43-1/4 4 S 4.5
HOE-918 50-5/8 x 50-5/8 1-5/8 48-5/8 x 48-5/8 58-3/4 x 58-3/4 4-3/8 S 9.7

B = Bar Grate, R = Radial, P = ADA/Pedestrian, BH = Beehive

SQUARE Inlets for Slab

Catalog A B C E F
Number Grate Grate Thickness Clear Opening Flange OD Frame Height Grate Type Drain Area
Sq. Ft.
MCS-112 13-3/8 x 13/3/8 1-9/16 11-5/8 x 11-5/8 19-1/8 x 19-1/8 4 S,P,CD 0.40
MCS-234 23-3/4 x 23-3/4 1-1/2 22 x 22 29-1/4 x 29-1/4 4 S,P 1.85
MCS-320 25-3/4 x 25-3/4 1-1/2 24 x 24 31-3/8 x 31-3/8 4 S,P,BH 2.05
MCS-428 30 x 30 1-1/2 28 x 28 34-1/2 x 34-1/2 4 CD 2.70
MCS-468 32 x 32 1-1/2 30 x 30 36 x 36 4 CD,SC 2.80
MCS-718 38 x 38 2 36 x 36 43 x 43 4 CD,SC 4.10

Square Catch Basin

Square Inlet

RECTANGULAR Catch Basins

Catalog A B C E F
Number Grate Grate Thickness Clear Opening Flange OD Frame Height Grate Type Drain Area
Sq. Ft.
HOE-180-A 18 x 24 1-1/2 16 x 22 24 x 30-1/4 4 CD 1.2
HOE-175-A 20 x 23 1-1/2 18 x 21 24 x 27 3-1/2 S,DF 1.1
HOE-275-A 24 x 30 2 20 x 26 29 x 35 3-1/2 S 2.4
KY-460 23-1/2 x 30 3 21-3/8 x 27-7/8 32-1/2 x 39 4 CD 2.3
HOE-562 25-3/4 x 31-3/4 1-1/2 24-1/4 x 30-1/8 31-3/8 x 37-3/8 4 S 2.7
HOE-580 16-7/8 x 38 1-3/4 15-1/4 x 35-3/4 26 x 41-3/8 5-1/2 S,DF 1.4
HOE-518 23-3/4 x 35-3/4 1-1/2 22 x 34 29-1/2 x 41-1/2 4 S,SC,P 2.7
HOE-818 24 x 48 (2) 1-1/2 24 x 48 35 x 60 5 S,SC 3.3
HOE-567 49-3/4 x 49-3/4 1-1/2 24 x 48 31-1/2 x 55-1/2 4 S 4.2

B = Bar Grate, R = Radial, P = ADA/Pedestrian, BH = Beehive

  • Frame bottom flange to rest on concrete structure

  • Designed for H-20 traffic loading

  • Most available with solid covers

  • Options for one piece solid covers: bolted, watertight

Standard

Crossdrain

Beehive

Pedestrian

Directional

Solid

DOUBLE CATCH BASINS

Catalog A B C E F
Number Grate Grate Thickness Clear Opening Flange OD Frame Height Grate Type Drain Area
Sq. Ft.
HOE-275-A DBL 30 x 48 2 26 x 46 36 x 56 3-1/2 S 5.0
HOE-428-DBL 30 x 60 1-1/2 28 x 60-1/4 34-1/2 x 66-1/2 4 S 5.3
HOE-518-DBL 36 x 48 1-1/2 34 x 48 43 x 57-1/2 4 S 4.2
HOE-818-DBL 48 x 48 (4) 1-1/2 48 x 48 60 x 57-1/2 4 S 6.6

B = Bar Grate, R = Radial, P = ADA/Pedestrian, BH = Beehive

Double Catch Basin