Works with Perma-Shield Awning Windows manufactured from 1981 to 1995. Replaces 1976 series operator A21-7092D. Replaces 1975 series operator A21-7092D. Fits unit A21 with a visible glass width of 19-9/16 Length of the operator arm is 8-1/4 Includes bracket and screws. Operator handle sold separately part number 0532408. Andersen Awning Operator - #A2-7184 Scissor Type - Stone Color Works with Perma-Shield Awning Windows manufactured from 1981 to 1995. Replaces 1976 series operator A21-7092D. Replaces 1975 series operator A21-7092D. Changeover instructions are required. Fits unit A21 with a visible glass width of 19-9/16". Length of the operator arm is 8-1/4"". Includes bracket and screws. Operator handle sold separately part number 0532408.