The 24K and 24L is just the package type of the motorhome. Like how Chevy vehicles could be a LS, LT, or LTZ. The Adco Deluxe RV Windshield Cover for Class C Motorhome - Vinyl - White Item # 290-2523 is designed to fit both models so it's a great option for your 2019 Jayco Melbourne Motorhome. view full answer...