Our professional screens are larger in size to accommodate collegiate & professional players.  Frames are heavy wall schedule 40 aluminum 1.9" O.D. pipe.  Frame and wheel assemblies are welded for durability.  Permanent 10" Diameter x 4 Wide pneumatic tires for easy transport.  Netting is # 60 (3mm) weather treated, 1-3/4" mesh.  Netting is fabricated in pillow case style that slip over frames.  Lacing is only required at the bottom to close the net.