If two quotes seem far apart, ask for specific reasons. Be sure all materials are tested for strength and durability and that they meet or exceed building codes. Assume that you pay more for better quality. Ask about safety features and energy efficiencies. The new ComfortView Room by Patio Enclosures, Inc. has a multi-point locking system with dual deadbolts, including a lock that is out of the reach of young children.
All glass is safety tempered and the room offers the company's highest energy efficiency ratings.