Trench Castings : Airports, Ports, Industrial Trench Frames & Grates

Neenah Foundry offers a variety of cast iron airport trenches. Select from the list below to find the airport trench that fits your needs

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Catalog Number Grate Width Seat Depth Trench Width Overall Frame Width Grate Material Type A Grate Type C Grate Type D Lid Frame Type
R-4990-AA 8 2 6 Gray Iron x
R-4990-BA 10 2 8 Ductile Iron x
R-4990-CA 12 2 10 Ductile Iron x
R-4990-DA 14 2 12 Ductile Iron x x x
R-4990-EA 17 2 15 Ductile Iron x x
R-4990-FA 20 2 18 Ductile Iron x x
R-4990-HA 26 2 24 Ductile Iron x x
R-4990-KA2 34 2 31 Ductile Iron x x
R-4990-OA 51 2 48 Ductile Iron x x
R-4993-AAB 8 2 6 19 1/4 Gray Iron x T
R-4993-BAB 10 2 8 21 1/4 Ductile Iron x T
R-4993-CAB 12 2 10 23 1/4 Ductile Iron x T
R-4993-DAB 14 2 12 25 1/4 Ductile Iron x x x T
R-4993-EAB 17 2 15 28 1/4 Ductile Iron x x T
R-4994-AAB 8 2 4 18 Gray Iron x S
R-4994-BAB 10 2 6 20 Ductile Iron x S
R-4994-DAB 14 2 10 24 Ductile Iron x x x S
R-4994-EAB 17 2 13 27 Ductile Iron x x S
R-4993-FAB 20 2 18 31 1/4 Ductile Iron x x T
R-4994-FAB 20 2 16 30 Ductile Iron x x S
R-4993-HAB 26 2 24 37 1/4 Ductile Iron x x T
R-4993-KAB 34 2 32 45 1/4 Ductile Iron x x T
R-4993-OAB 51 2 49 62 1/4 Ductile Iron x x T
E-4994-CAB 12 2 8 22 Ductile Iron x S
R-4994-HAB 26 2 22 36 Ductile Iron x x S
R-4994-KAB 34 2 30 44 Ductile Iron x x S
R-4994-OAB 51 2 47 61 Ductile Iron x x S
All dimensions are listed in inches unless otherwise noted.
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