I read a post that asked the question does it have to be the same mesh as in the original design, which shows 2 bits of vertical sided catwalk mesh and in the video explains why this mesh works, if you replace one bit with another stye, then in my mind ,,, thats a recipe change from a tried and proven setup by the designer, and chicken's have teeth,,,,, I am a chicken whisperer , and they have 1 tooth, its called a beak.... now thats got me thinking... an octopus has a beak ... like a chook ,,,, perhaps I should have said "rocking horse poo" , lol.. luv the forum