Was concerned with the open vents on the front (e.g. stray beams making it through), so I cut some quick filters. Used thick foam double sided tape so it still gets airflow from the top and bottom.
Did your unit come with air assist or did you add it ?
Added it last night 
what all did you have to buy to add air assist ?
Air Assist Head: https://amzn.com/B0094WLPYK
Air Pump: https://amzn.com/B002JPM91W
Self-Retracting tubing: http://www.mcmaster.com/#9148t125/=12zuegz
You’ll also need to get a coupler to attach the self-retracting tubing (5/16" ID) to the air pump (1/4" ID). What I did was wrap the end of the self-retracting tubing and got a snug fit into the air pump, since the tubing has an OD of nearly 1/4".
The pump link is the same link as the air assist head
Whoops, updated!