[Highland Park] Ladder jacks to borrow?

Hello, My father-in-law is coming from out of the country to stay with us and help us paint the exterior of our house (he is a professional painter). Given he can't bring supplies with him from overseas, we are looking to borrow two ladder jacks (our ladder is 15" wide, so at least that large). He is here for all of Sept., so ideally we'd borrow them for the month. However, if we could borrow them intermittently throughout that time, that would still help. Thank you! Meg