what do you call this type of 'awning'?

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i'm looking at similar design for side of my house (approx 35ft-40ft length) and probably 2.5ft from the wall (e.g. 2.5ft x 40ft)

what is the rough cost estimate? i don't know what are the materials normally used, laminated glass, poly etc...

glass cheaper compared to the lexan poly?

thanks!