Building a partial cage

Hi guys

I have a new network rack I need to deploy out in a shipping area of a factory. I want a sliding cage door with a lock, need to make it L shaped as the 2 other sides will be masonry. It's just going to hold a fiber run, two little switches one for WAP's one for NVR stuff.

I was looking at this but wondering about if you guys had any othe recommendations of material/places to look to do this

https://www.grainger.com/mobile/product/WIRECRAFTERS-Wire-Partition-Doors-and-Gates-WP8304901/_/N-19jw/Ntt-cage+with+door?EndecaKeyword=cage+with+door&NLSCM=14&searchRedirect=cage+with+door&sst=All&breadcrumbCatId=4625&fromPidp=true&picUrl=//static.grainger.com/rp/s/is/image/Grainger/35W557_AS01?$smthumb$webparentimage$