SherpaElement Travel Pet Carrier, Airline Approved, Padded & Washable, Includes Mesh Windows & Spring Frame, Black and Tan, Large

What is the difference between the elememt deluxe and original deluxe carriers by sherpa?

How far can the top be pushed down? southwest airlines said that their window and aisle seats are these dimensions underneath - 14" w x 8.25" h x 19"