Product details:

The Eureka Timberline 4 Vestibule is an optional storage vestibule fits the 4 person Timberline 4 tent. It is fairly simple to attach. It provides additional covered storage space (14sq ft) just outside the tent door. Has a vent for ventilation. Zippers open or closed. It has no floor. Made from polyester taffeta with a 1000 mm coating. Weight 1 lb. Does not fit Timberline SQ models. It has no floor.Sleeping Capacity: 4
Floor Size: 8 ft 7 in x 7 ft 2 in
Interior Peak Height: 4 ft 10 in
Minimum Weight: 7 lbs 13 oz