Winware by Winco ALXP-1826 Winware Sheet Pan 18 Inch x 26 Inch Aluminum

If you turn the pan upside down, what is the length and width of the flat working surface? I'm thinking of using this as a pizza prep surface at home.

Why does the winco sheet pan i purchased have 'bakn bakery and kitchen supplies' imprinted on the back? guessing it's a switch and not happy.

Why are a quantity of 6 or 12 more than 6 or 12 times the "1" price?

Would a silicon line 24.5" long fit in this pan?