The part number did not match with any I could find but when I measured the size needed and could see the one inch squares in the photo background I thought I it looked like it would work. I submitted a question online about the diameter of the fan blade and received a prompt reply. I also checked the fan blade size in the same apartment complex and compared the look of the blade to the online photo. I ordered the part and it came in two days. The fan blade fit perfect. We matched flat area with flat area on the fan and pushed it on. The fan was fixed in about 10 minutes.