It was very easy to find the needed part on the website. It was packaged well and arrived quickly. Perfect!
Blower cut off plate for: 4001 dd/rld/rl
Blower cut off plate for: 4001 dd/rld/rld2, 4000 rld4/crld4
Buy this part and as many parts as you like and pay only $9.99 shipping, within the Contiguous United States.