an awning includes a support member , an extension member , and an adjustment device . the extension member has a first end , a second end , and a longitudinal axis extending therebetween . the first end of the extension member couples with an edge of a cloth . the adjustment device includes at least two positioning frames coupled to the support member and a y - shaped support frame disposed between the positioning frames . the y - shaped support frame has an upper fork , a lower fork , and a base coupled to the second end of the extension member . the adjustment device is configured to pivotally move the extension member upward and downward . the longitudinal axis of the extension member is disposed at a range of angular positions relative to a horizontal axis .