Used for a few years when my child was small. The silicone rubber part is discolored, but other than the rubber discoloration, it's in relatively good condition. It attaches firmly to the stove with strong magnets! I used it quite a bit (^^) No original box or instruction manual. Reference: ↓ This is a guard specifically for fan heaters. Silicone rubber, which doesn't get hot easily, is used for the part that touches the air outlet. It can be easily attached to the fan heater with magnets. It can be attached to fan heaters with an air outlet width of 30-46cm.