GPW
http://cgi.ebay.com/ebaymotors/Go-Power-80-Watt-Solar-Panel-Kit_W0QQcmdZViewItemQQcategoryZ50437QQitemZ4617982696QQrdZ1QQsspagenameZWDVW
Here's one that is about 2' x 4' but its only puts out about 80 watts or 6 amps of power.
But it's a little pricy at $525
Dan