Your part # AP4439951 clearly show that there are two screws in the lamp lens cover and mine has one single screw mounted in the center on the outer edge. Is this the correct picture?
Dominic H. for Model Number 721.64683300
Answer Hello Dominic! According to your model number the lamp cover 3550W2L001A is the correct replacement. Checking the manufacturer site information and the picture they have available, the available image on our site is correct. Thanks!