Clothes dryer taking 2 hours to dry a small load

My dryer is currently taking over two hours to dry a small load (2pairs of Jean's, 3 shirts and undergarments for 3 days)

All the heating elements work, the lint traps and hose have been cleaned out, the drum spins etc.

What I am wondering is, my washer and dryer are in a renovated pantry, vented to the outside, but has a door on the front. Is it possible that when the door closes the dryer is not getting enough airflow to properly dry the clothes? I usually close the door as it is loud and rather annoying.

Thanks in advance!

Edit - it is a maytag but I am unsure of model