If your screens have the plastic tabs at the bottom, you pull them out straight, bottom first. There are spring-fiction clips around the edge that must be depressed by pulling gently out around the edges.
Getting them back in is a royal PITA.
Wright and Penny
(with Fitz and Lizzie, the camping kitties)
2010 Tundra 4X4 5.7L V8
2014 Rockwood 2604WS
Life is a cruel teacher. She gives the test first; the lesson then follows.