Airport Castings : Manhole Frames & Grates

Neenah Foundry offers a variety of cast iron manhole frames and grates for the airport market. Select from the list below to find the airport manhole frames and grates that fit your needs.

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Catalog Number Description A- Grate Dimension AA-Top Frame Dimension B-Grate Thickness C-Clear Opening E-Bottom Frame Dimension F-Frame Height G-Slot Width H-Slot Length Grate Type Square Feet Open Weir Perimeter Lineal Feet Lid/Grate Material
R-3493-C Airport Manhole Frame, Ductile Iron Grate 23-5/8 N/A 1-1/4 21 37-1/2 8-9/16 1 1/4 1-1/2 G 0.6 6.2 Ductile Iron
R-3492-CG Airport Manhole Frame, Ductile Iron Grate 38 N/A 1-1/2 36 49 10 1 8 G 2.6 9.9 Ductile Iron
R-3492-BG Airport Manhole Frame, Ductile Iron Grate 38 N/A 1-1/2 36 49 4-1/2 1 8 G 2.6 9.9 Ductile Iron
R-3492-A1 Airport Manhole Frame, Ductile Iron Grate 32-3/8 39-1/2 2 30 42 9 1-1/2 1 G 2.4 8.5 Ductile Iron
R-3492-1 Airport Manhole Frame, Gray Iron Grate 27 33-1/2 2-1/2 24 36 9 1-1/2 1 G 1.6 7.1 Gray Iron
R-3491-JG Airport Catch Basin Frame, Ductile Iron Grate 32-3/8 N/A 2 30 39-1/2 6 1-1/2 1 G 2.4 8.5 Ductile Iron
R-3491-HG Airport Catch Basin Frame,Ductile Iron Grate 29 N/A 1-3/4 27 35 6 1-1/2 1 G 1.9 7.6 Ductile Iron
R-3491-GG Airport Catch Basin Frame, Gray Iron Grate 27 N/A 2-1/2 24 33-1/2 5 1-1/2 1 G 1.6 7.1 Gray Iron
R-3491-AG Airport Catch Basin Frame, Gray Iron Grate 21 N/A 2-1/2 18 27-1/2 5 1 1/4 1 G 0.9 5.5 Gray Iron
All dimensions are listed in inches unless otherwise noted.
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