Artistic Enclosures. The Cambridge Elite Window Package for Sunbreeze sunrooms is available in double-hung, swing, and slide configurations. The windows combine energy efficiency and sound resistance. (800) 944-8599. www.artisticenclosures.com.

Nana Wall Systems. The Individual Panel Sliding System, available in wood or aluminum framing, allows patio rooms and solariums to be opened up entirely to the elements. When closed, the panels appear to be a wall of adjoining floor-to-ceiling windows. The panels stack out of sight or slide into a pocket wall. (800) 873-5673. www.nanawall.com.

Gorell Windows & Doors. Constructed of aluminum-reinforced vinyl with a heat-reflective polycarbonate roof system, American Conservatory Systems' Lexington conservatory is available with a heavy-duty sliding or swing door, decorative roof detailing, a variety of window configurations, and several glass options. All-climate glass insulates the structure. (888) 822-2485. www.gorell.com.

Westview Products. Hub style sunrooms are constructed with a heavy-duty aluminum glazing system tested for heat transfer, wind load, and water infiltration. Units can be custom created in nearly any configuration. Several window and door options are available. (800) 203-7557. www.westviewproducts.com.

Temo Sunrooms. Signature Collection sunrooms are designed with a premanufactured panel system that can install in one to two days, the maker says. Interior overhead wood beams, crown molding, and elevated ceilings combine with a variety of roof style options, including a hip roof design, to provide a traditional room addition appearance. (800) 344-8366. www.temosunrooms.com.