INTERCEPT PDB Down Draft Table Standard Sizes 24 Depth Models24 x 24 1500 CFM Downdraft Bench24 x 36 2000 CFM Downdraft Bench24 x 48 3000 CFM Downdraft Bench24 x 60 3500 CFM Downdraft Bench24 x 72 4000 CFM Downdraft Bench24 x 96 6000 CFM Downdraft Bench36 Depth Models36 x 24 1500 CFM Downdraft Bench36 x 36 2000 CFM Downdraft Bench36 x 48 3000 CFM Downdraft Bench36 x 60 3500 CFM Downdraft Bench36 x 72 4000 CFM Downdraft Bench36 x 96 6000 CFM Downdraft Bench* Custom Sizes Available Capture Velocity Capture velocity (FPM) at the bench ranges from 384 FPM to 614 FPM depending on the model. Optional higher FPM is available. On all units, an integral exhaust fan assembly is installed in the clean air plenum. All controls, push button, and signal lights are prewired and premounted in a NEMA 12 control with overload protection.