KIT-H18053 SKU KIT-H18053-2658 Extra Key for STI-9100, 9105, 9105-S & 9110 (quantity 2) Please log in to see price or purchase this item Request an account Line Comment Special Price Features:Kit includes two keysFor lock used in STI-9100, STI-9105 and STI-9110 Thermostat Protectors