Marianne .... what good is ventilation if it comes at the expense of moisture ? ventilation creates moisture , which then it needs to dry out. t it then gets wet again and then needs to dry out again. but if it didnt get wet to begin with it would need no that additional ventilation strip. it would ventilate from the open gaps at the bottom of the cover you mentioned nexgrill recommends keeping the units under a patio when not in use to help protect from the outdoor elements. that is good but only for those who have a patio. many like myself have no patio to protect it from the outside elements and that is why we need and purchase this product. and a 1 year warranty does not give much confidence. ....joey
hello Joey, my name is Marianne on behalf of Nexgrill.This is a universal cover it should fits most gas charcoal combo grills. you can install the grill cover in the way it fits your grill. These are all for ventilation purposes. We do recommend keeping the units under a patio when not in use to help protect from the outdoor elements. I hope you enjoy your day!!