Skuttle™ Indoor Air Quality Products Route 10, Box $1 Marietta, Ohio 45750-9213 740-373-9169 800-848-9786 Fax: 740-373-9565 SKITTLE SELF ADJUSTING MAKE-UP AIR CONTROL. MODEL 216 US. PATENT 3982560 CANADA PATENT 688557 MAKE-UP-AIR CONTROL INSTALLATION INSTRUCTIONS Tools Needed * v4" Drill Bit « Drill * Screwdriver * Tin snips * Saw (for wall opening) * 35," Alien Wrench (included). Cut Opening in The Return Air Plenum Your Make-Up Air Control is easily mounted on your return air plenum or duct.
