Here is a picture of my mower deck that I use for mowing my lawn. I have useed it like this for over a year now and I believe it offers a superior cut compared to the original setup. I thought of this when looking under a friend's Exmark Commerical walk behind. Each blade on this deck was enclosed by a plate. That is basically what I did. On the stock deck the rear of the deck in enclosed but the front is wide open. I noticed while cutting, that the clippings would shoot from both the discharge as well as coming out the front. Couple that with the old low-lift mower deck blades and the only grass that gets cut is what is standing upright. Since I have done this I noticed my clippings are smaller and it will dispurse the grass a bit more than original. I am ordering (3) Hi-Lift Gator blades in hopes that it will cut even better. Oregon does not make direct replacements but I am going to modify a set that is close. Any questions let me know.