Access & Hatch Covers : Access Hatch Grates

All dimensions are in inches.

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Catalog Number Pipe Size Dimension A - Grate Dimension Dimension B - Grate Thickness Dimension C - Clear Opening Dimension E - Frame Dimension Dimension F - Frame Height Grate Type Open Area Perimeter Shape
R-6673-D N/A 19-1/2 x 31-1/2 1-1/2 30 x 18 36-1/4 x 24-1/4 4 A 2.1 8.6 Square/Rectangular
R-6673-E N/A 19-3/4 x 37-3/4 1-1/2 18 x 36 24 x 42 4 A 2.5 9.6 Square/Rectangular
R-6673-J N/A 25-1/2 x 31-1/2 1-1/2 23-7/8 x 29-7/8 30 x 36 4 A 2.6 9.5 Square/Rectangular
R-6673-L N/A 24-3/4 x 25-3/4 1-1/2 24 x 48 54 x 30 4 A 3.7 12.6 Square/Rectangular
R-6673-N N/A 18-3/4 x 31-3/4 1-1/2 30 x 36 36 x 42 4 A 3.3 11.6 Square/Rectangular
R-6673-O N/A 24-5/8 x 31-1/2 1-1/2 30 x 48 36 x 54 4 A 4.9 13.5 Square/Rectangular
R-6673-Q1 N/A 38 x 24-15/16 1-1/2 36 x 48 44-1/2 x 56-1/2 4 A 5 14.7 Square/Rectangular
R-6672-H N/A 27-1/2 x 27-1/2 1-1/2 26 x 26 32 x 32 4 A or C 2.1 9.2 Square/Rectangular
R-6672-J N/A 30 x 30 1-1/4 28 x 28 34 x 34 4 A or C 2.4 10 Square/Rectangular
R-6672-K N/A 31-3/4 x 31-3/4 1-1/2 30 x 30 37 x 37 4 A or Q 2.5 10.6 Square/Rectangular
R-6672-M N/A 18-1/2 x 37-1/4 1-1/2 35-3/4 x 35-3/4 42 x 42 4 A or C 3 12.3 Square/Rectangular
R-6672-Q N/A 28-1/4 x 56-1/2 1-1/2 54 x 54 64 x 64 4-1/2 A or C 9.3 18.8 Square/Rectangular
R-6673-A N/A 14 x 20 1-1/2 12 x 18 18 x 24 4 A 0.6 5.7 Square/Rectangular
R-6673-B N/A 13-1/2 x 25-1/2 1-1/2 12 x 24 18 x 30 4 A 0.9 6.5 Square/Rectangular
R-6673-C N/A 19-1/2 x 25-1/2 1-1/2 18 x 24 24 x 30 4 A 1.2 7.5 Square/Rectangular
R-6672-1 N/A 12 x 12 1 10-3/4 x 10-3/4 16 x 16 3-1/2 H 0.4 3.9 Square/Rectangular
R-6672-A N/A 12-1/4 x 12-1/4 1 12-1/2 x 11-1/2 16 x 15 6 A or C 0.8 4.1 Square/Rectangular
R-6672-B N/A 13-3/4 x 13-3/4 1-1/2 12 x 12 18 x 18 4 A or C 0.5 4.6 Square/Rectangular
R-6672-C N/A 18 x 18 1-1/2 16-1/4 x 16-1/4 24 x 24 4-1/2 A or C 0.8 6 Square/Rectangular
R-6672-D N/A 21-1/2 x 21-1/2 1-1/2 20 x 20 26 x 26 4 A or C 1.1 7.3 Square/Rectangular
R-6672-E N/A 23-1/2 x 23-1/2 1-1/2 22 x 22 28 x 28 4 A or C 1.8 7.9 Square/Rectangular
R-6672-F N/A 25-3/4 x 25-3/4 1-1/2 24 x 24 30 x 30 4 A or C 2.7 8.6 Square/Rectangular
R-6672-G N/A 27 x 27 2 25 x 25 33-1/2 x 33-1/2 4 A or C 2.2 9 Square/Rectangular
R-6450-FG 20 21-1/2 1 20 27-3/8 4 G 0.1 5.6 Round
R-6450-GG 21 24 3/4 22 30 3-1/2 G 1.3 6.3 Round
R-6450-HG 24 26-5/8 3/4 25 30-1/2 4 G 1.3 6.9 Round
R-6450-JG 27 31-3/4 3/4 30 36-1/2 6 G 1.9 8.3 Round
R-6450-KG 30 33-1/2 3/4 32 37 4 G 2.7 8.8 Round
R-6662-KGS N/A 25-3/4 x 25-3/4 1-1/2 24 x 24 30 x 30 4 N/A 0 0 Square/Rectangular
R-6662-PGS N/A 31-1/2 x 31-1/2 1-1/2 30 x 30 36 x 36 4 N/A 0 0 Square/Rectangular
R-6662-RGS N/A 38 x 38 1-1/2 36 x 36 42 x 42 4 N/A 0 0 Square/Rectangular
R-6663-QGS N/A 38 x 38 1-1/2 x 36 40-3/32 x 44 4 N/A 0 0 Square/Rectangular
R-6663-RGS N/A 76-9/16 x 38-3/8 1-1/2 36 x NULL 80-3/16 x 42 4 N/A 0 0 Square/Rectangular
R-6352-G 24 25 1/2 24 27 3 G 1.3 6.5 Round
R-6400-AO N/A 11-3/4 1 10 17-1/4 4 G 0.3 3.1 Round
R-6400-BO N/A 19-3/4 1 18 25-1/4 4 G 0.8 5 Round
R-6400-CO N/A 27 1-1/4 23-1/2 33-1/2 4 G 1.8 7 Round
R-6400-DO N/A 29 1-3/4 26-11/16 35 6 G 1.2 7.6 Round
R-6450-AG 8 9 1 8 12-1/4 2-1/2 G 0.2 2.4 Round
R-6450-BG 10 12 1 11 14-3/4 2-1/2 G 0.2 3.1 Round
R-6450-CG 12 13 3/4 11-3/4 17 2-1/2 G 0.4 3.4 Round
R-6450-DG 15 16 3/4 15 20-1/4 2-1/2 G 0.5 4.2 Round
R-6450-EG 18 20-1/2 5/8 18 24 2-1/2 G 0.7 5.4 Round
R-6131 N/A 21-1/2 1 20 27-3/8 4 G 1 5.6 Round
R-6132 N/A 24 3/4 22 30 3-1/2 G 1.3 6.3 Round
R-6133 N/A 25 1 22 28 6 G 1.3 6.5 Round
R-6134 N/A 26-5/8 3/4 25 30-1/2 4 G 1.5 6.9 Round
R-6136 N/A 31-3/4 3/4 30 36-1/2 6 G 2.5 8.3 Round
R-6137 N/A 33-1/2 3/4 32 37 4 G 2.7 8.8 Round
R-6352-A 12 13 1/2 12 15 2-1/2 G 0.4 3.4 Round
R-6352-B 15 16 3/4 15 20-1/4 2-1/2 G 0.8 4.2 Round
R-6352-D 18 19 1/2 18 21 3 G 0.7 4.9 Round
R-6352-E 20 21 1/2 20 23 3 G 0.8 5.5 Round
R-6110 N/A 21 2-1/2 17-15/16 27-1/2 5 G 0.9 5.5 Round
R-6111 N/A 23 1-1/4 20 29-3/4 4 G 1.2 6 Round
R-6112 N/A 23 1-3/4 21 30 4 G 1.3 6 Round
R-6113 N/A 24 1-5/8 22 30 4 G 0.9 6.3 Round
R-6114 N/A 27 1-1/4 23-1/2 33-1/2 4 G 1.8 7 Round
R-6115 N/A 27 2-1/2 24 33-1/2 5 G 1.7 7 Round
R-6116 N/A 29 1-3/4 26-11/16 35 6 G 1.2 7.6 Round
R-6117 N/A 32-3/8 2 30 39-1/2 6 G 2.4 8.5 Round
R-6118 N/A 38 1-1/2 36 49 4-1/2 G 2.6 9.9 Round
R-6130 N/A 20-1/2 5/8 18 24 2-1/2 G 0.8 5.4 Round
R-5901-E 24 22-1/4 1-1/2 20-1/2 26-1/2 4 G 1.1 5.8 Round
R-5901-F 27 25-1/4 1-1/2 23-1/2 29-1/2 4 G 1.6 6.6 Round
R-5901-G 30 28-1/4 1-1/2 26-3/8 32-1/2 4 G 2 7.4 Round
R-5901-H 36 34-1/4 1-1/2 32-1/2 38-1/2 4 G 2.5 8.9 Round
R-5901-J 42 40 1-1/2 38-1/2 44-1/2 4 G 3.7 10.5 Round
R-5901-K 48 46-1/8 1-1/2 44-1/2 50-1/2 4 G 4.8 12.1 Round
R-5901-A 12 10-1/4 1-1/2 8-1/2 14-1/2 4 G 0.2 2.7 Round
R-5901-B 15 13-1/4 1-1/2 11-1/2 17 4 G 0.3 3.5 Round
R-5901-C 18 16-1/4 1-1/2 14-1/2 20-1/2 4 G 0.5 4.3 Round
R-5901-D 20 18-1/4 1-1/2 16-1/2 22-1/2 4 G 0.7 4.8 Round
All dimensions are listed in inches unless otherwise noted.
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