What is the size of my iPad Air 2?

Just search online for screen protectors that fit a 2014, 9.7 inch screen iPad Air 2.

That is all you need to use for search terms.

You do not need to know the exact overall size and dimensions of any iPad.

You search for third party cases/keyboard cases and screen protectors using the stated year, generation and screen size of the iPad.

That is all the info you need.

Best of Luck to You!

From iPad Air 2 - Technical Specification

What is thr reason for asking for this information?

Here are the tech specs, which includes the size and weights: iPad Air 2 - Technical Specification