This item is provided by Crutchfield.com and includes free phone technical support for the life of the product. Details on how to take advantage of this service will be included with your package. Should you have any issues locating information on how to contact Crutchfield Technical Support, please contact this website's Customer Service department. Cooling for "always on" components Some high-performance components need effective cooling to ensure optimal operation .And for "always on" components, such as DVRs, sometimes passive cooling just isn't enough. The Salamander Designs SA/XR20/AC extended rear panel features two 120mm whisper-quiet fans to provide constant airflow. A built-in thermostat activates the fans when the temperature inside the cabinet reaches 80 degrees . In addition to providing reliable air flow for cooling, the extended panel also adds 3-1/2" to the depth of the cabinet. The panel's designed for use with select Chameleon racks and Synergy cabinets, like the Model 237 . What's in the Box: 1. Extended rear-panel w/ two built-in fans 2. AC power adapter (w/ 6' DC cord) 3. 4 Thumb-nuts 4. 4 Flat-nuts 5. 4 Drop-in nuts 6. 4 Washers 7. 4 Studs 8. Magnet 9. Hex-key 10. Installation Instructions

This product can expose you to chemicals including formaldehyde or Di(2-ethylhexyl)phthalate (DEHP)which are known to the State of California to cause cancer,and birth defects and or other reproductive harm. For more information regarding the regulation go to www.P65Warnings.ca.gov.