Neenah’s R-4994 Series industrial frame and grate system offers high class reinforcement for airports, ports and other industrial sites. The R-4994 system features a Type S frame, increasing the drain’s grip on the surrounding concrete over standard frame and grate systems.
The R-4993 Series’ Type S unique frame shape allows the clear opening to be wider than typical. Bolt holes are drilled clear through cantilever seat and will not trap debris. Provision has been made for bolting successive frame sections together.