The internal wall mounted air handlers come in different sizes [9k 12k 18k 24k and 36k] – please take a look at the specification tables below.
Single-Zone Air Handlers
Multi-Zone Air Handlers
Note: The must be mounted no less than 5.9″ from the ceiling and are not suitable for wall mounting.
Note: The DIY systems come with wall-mounted and not cassette type air handlers.