DIY golf simulators using these durable impact screens with Archery Net designed and tested to withstand impact from the fast-moving golf balls. The box frame is self-standing but can be fixed to the floor and/or rear wall using 1-inch diameter tube clamps. Please use a net or panel behind your golf impact screen before use. The combination of screen and net results in long golfing experience. For curved screen you can use the standard frame pipe fittings with bendable ABS rods. We don't supply the EMT/ABS conduit tubing as freight shipping these inexpensive items is too costly. The 1" diameter EMT/ABS conduit piping is available at all good hardware stores (Lowes or Home Depot etc).You'll need 14 of the aluminium/ABS conduit tubing of 1" diameter for the complete box frame. The frame should be around 2 inches per side greater than the screen size. i.e. if the screen size is 12 ft x 9 ft (144" x 108") then the frame should be 12ft 4" x 9ft 4" (148" x 112"). If you find that the box frame is slightly too small then you can extend the tubes an inch or two out of the fittings to suit. If the box frame is too large then the pipes will have to be cut down in length to suit. If required use pipe clamps to secure the lower half of the frame or floors and /or the back pipes to the wall.