According to ThinkGeek, these are the specs:
• Life size prop replica of the Iron Throne
• A must-have for any ruler of the Seven Kingdoms
• Takes 6-8 weeks to build
• Go on, pay the gold price. We won't tell if you don't.
• Materials: Hand-finished, hand-painted fiberglass. Fire rated resin.
• Dimensions: 7'2" tall, 5'5" wide, 5'11" deep
• Weight: 350 pounds
Ned Stark not included. :(
(H/T Vulture.)