Hello- my window has no identification on what kind it is. It is a swung open and opens with a crank window handle . It is then has a locking mechanism to latch it shut. There is an arm ( which is 3/8") wide on the inside of the window that is held into place with a plastic guide (1" in height) which is broke and needs replaced . The house is 15 years old . I cannot find this part anywhere. I have enclosed a picture of the plastic part that holds the arm in place . Can you help me identify it so I can order it . Thank You
Rob