Trouble selecting Dropdown items

Describe the problem.

Trying to scrape some home improvement sites for their wood options and pricing.

Url: https://www.menards.com/main/building-materials/lumber-boards/cedar-wood-products/cedar-boards-decking-lumber-timbers/2-x-4-red-cedar-lumber-rough-sawn/1073356/building-materials/lumber-boards/cedar-wood-products/cedar-boards-decking-lumber-timbers/2-x-4-red-cedar-lumber-rough-sawn/1073354/building-materials/lumber-boards/cedar-wood-products/cedar-boards-decking-lumber-timbers/2-x-4-red-cedar-lumber-rough-sawn/1073356/p-1444422754961.htm

Only trying to grab three things off this site. Once I can get these, then I can use a pagination to loop through all of the wood types and use this same method. However, I'm having trouble with a click selector that grabs all of the lengths (dropdown menu).

NOOB to webscraper.io, but l've been able to do a few other sites, mostly cause they have all of their lengths as separate pages on the main site.

Any help would be great. TIA

is this supposed to be a solution or another question?