Hi, newly setup server closet, it's vented with a bathroom type continuous rated ceiling vent in the tiles. Where the wiring comes through the ceiling tiles there's some openings. To get air to pull from vents in bottom of server close door better, what do you suggest to seal between the cabling and ceiling tiles. It was suggested to use fiberglass installation, but I detest working around/with fiberglass. Any other safe material to close/seal these gaps?