This umbrella is such an ingenious design!  I have a small deck and it fits perfectly against my sliding glass door without taking up all the sun on my deck.  Besides keeping part of the deck cooler, it keeps the sun from beating in the house from that door late afternoon.  Be sure to get a heavy enough stand (mine is 40 lb.) or one made specially for these one-sided umbrellas as they could topple easily otherwise.  My dog thinks I bought it for her.  Thanks for a great product!