The John Deere RC72B has a cutting width of 72 in. and the John Deere RC78B has a cutting width of 78 in., a difference of 6 in. The John Deere RC78B has the higher cutting width.
The John Deere RC72B has a cutting width of 72 in. and the John Deere RC78B has a cutting width of 78 in., a difference of 6 in. The John Deere RC78B has the higher cutting width.