Greenhouse glass/plastic 2ft x 2ft (CW8 Barnton)

I am looking for some greenhouse glass or clear plastic (acrylic or Perspex etc). 2ft x 2ft. (610mm x 610mm) Please. need 8. Also need the triangles x 4 if anyone has any. The glass is for a 6ft x 8ft greenhouse. not sure what the triangles measure as i do not have any. the base will be 2ft obviously and height would be approximately 19-20 inch, and diagonal about 30 inch. Please contact me if you have any lying around. it would be much appreciated. Thankyou for looking.