For very large grounds there are so-called Tri-Deck systems available like TDR-15 and TDR-22.
The heavy, six-inch thick front and rear rollers guarantee for an excellent cutting pattern without damaging the lawn. Cabel wipers mounted on the rollers are standard.
This device promises you an excellent cut quality at high speed due to the very fast rotation of the high-lift blades.
And, of course - as with all products from Progressive Turf - the SDR series has a heavy duty design for superior strength and durability.