The state has agreed to a set of guidelines for how restaurants can use temporary outdoor heated structures, like tents or transparent, dome-shaped “igloos,” as they try to maintain customers during the pandemic, according to the Connecticut Restaurant Association.

The association said the enclosed outdoor structures at restaurants, such as igloos and tents, must include adequate ventilation with fresh air being brought in and inside air being exhausted.

The buildings also must have one door and two or more vents open at all times, and there must be sanitization of all touchpoints and a 15-minute waiting period between groups of diners.