I'm not sure how you have your checkboxes set up, but this is how I would do it.
Make one checkbox group called 'Products' then add your values to it, like so:
0;Retractable Sunscreens;Retractable Sunscreens
0;Patio Awnings;Patio Awnings
0;Rolling Shutters;Rolling Shutters
Then check "Wrap each element" so each option appears on a separate line.
Then save and test!
Terry