The lower the U-factor, the better the door keeps in heat. SHGC measures how well a product keeps out solar heat. Look for a low SHGC in a climate that mainly requires cooling and a high SHGC in a climate that requires heating. The label shows the solar heat gain coefficient (SHGC) and U-factor for the door. Learn more about the NFRC label. The National Fenestration Rating Council (NFRC) label helps you compare energy performance ratings of doors. This will help narrow your selection. Look for the ENERGY STAR label to help identify energy efficient products for your climate. When selecting doors for energy efficiency, it's important to first consider their energy performance ratings in relation to the local climate and your home's design. If you're building a new home, you should consider buying the most energy-efficient doors possible. If you have older doors in your home, replacing them might be a good investment, resulting in lower heating and cooling costs. Storm doors are then installed to complete the enclosure, providing you with year-round beauty, versatility and comfort.New exterior doors often fit and insulate better than older types. Each panel is made from 1-3/4” aluminum enclosure rails and is assembled on site with slip channels for even and uneven openings. Gentek porch enclosures are manufactured from custom made enclosure panels which are specifically designed to fit into existing openings. Shaped windows 300 Series – Deluxe Storm Windows.Available in White, Chestnut Brown, Brownstone, Pebble, Black, Commercial Brown and Mill Finish. ![]() ![]() Inserts removable from inside or outside.Face mount standard 3/4” blind stop flange or optional 1-1/2” overlap flange.This air space creates a thermal barrier increasing the efficiency of the window which saves you money by reducing heating and air conditioning costs. When storm windows are installed on the exterior or interior of existing windows there is an air space created between the two windows reducing air movement. Storm windows can be installed on your house, cottage, historical buildings and they can even be used for three season sunrooms or porch enclosures. Gentek aluminum storm windows are a simple, practical and economical way to increase the efficiency of existing windows. ![]() ![]() The screen is enclosed in a factory installed cartridge on the uppermost portion of the glass area. The hidden vent retractable screen option allows for a clear view when the operating sash is closed and ventilation when open.
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