If I were to reconstruct the measurements in my head you probably need the following.. four non-treated 2x4s measuring 48", 16", 16", and another 16". Then it looks like he used six pieces of pine boards measuring about 4 1/2" x 6" x 3/4". He took the boards and glued them together to make 3 pieces which will end up measuring 4 1/2" x 6" x 1 1/2".. then what you do is cut the small pieces at a 45° angle looking something like this-----> /____\ then just assemble by spacing the two by fours every 16" from the bottom to the top.. measurements may vary a bit.. these measurements are based on what I saw in the video so they aren't exact but that should be enough to help you get started..
If I were to reconstruct the measurements in my head you probably need the following.. four non-treated 2x4s measuring 48", 16", 16", and another 16". Then it looks like he used six pieces of pine boards measuring about 4 1/2" x 6" x 3/4". He took the boards and glued them together to make 3 pieces which will end up measuring 4 1/2" x 6" x 1 1/2".. then what you do is cut the small pieces at a 45° angle looking something like this-----> /____\ then just assemble by spacing the two by fours every 16" from the bottom to the top.. measurements may vary a bit.. these measurements are based on what I saw in the video so they aren't exact but that should be enough to help you get started..