Duke Metering manuafactures a number of different models for use on different planes and helicopters. Below are the currently avaible models and their specifications.  

Model 43001

Model 43001 units are designed for use on Cessna Ag-Wagons, old model air-tractors and some AG-Cats with Transland gates. Installing the Model 43001 is simple. Remove the gate from your regular spreader, attach the Model 43001 exactly like the gate you removed, then do your wiring. You need only drill four 1/4" holes in your spreader, then change the vanes for better distribution.

Model 43020

Model 43020 is designed to fit the sliding gate on the Grumman Ag-Cat. It comes complete with a metering unit built into the spreader. It attaches to the plane the same as all standard units. The Duke Model 43020 is equipped with a 12-volt power system. The 24-volt systems are available by special request. Write or email us if you would like information about our hydraulic systems

Model 43030

Model 43030 are designed to fit the Piper Brave and Piper Pawnee.

Model 43040

Model 43040 are designed to fit the wide gate Air-tractor and Ag-Cat

Model 43050

Model 43050 are designed to fit the Thrush and Bull Thrush.