This is a 2-way heater for small animals, allowing for both external and internal placement. - Brand: GEX - Model Name: 2WAY Heater-S - Features: Can be hung externally - Features: Can be placed internally - Application: Small animal heater - Size: S - Features: Keeps warm, includes instruction manual Thank you for viewing. This item is new and unused, but please understand that it has been stored at home. There are two in stock.