. I need to purchase a part for my legacy Lowel light, how do I determine the part # and then purchase the part?

Please visit the Lowel
Parts Book at 
https://cdn.shopify.com/s/files/1/2560/2536/files/LowelPartsBook_2013_Web.pdf?1460
.  Once you have determined the part #,
please call Tiffen Customer Service at (800) 645-2522 x6, Mon – Fri between the
hours of 9am and 5pm ET (NY time) to place your order with a credit card.