House windows manufacturers

U Values, SHGC, and VTZola European

Window Heat Flow

Our windows and doors offer outstanding thermal performance and airtightness.

Zola windows are among the most energy efficient windows on the market, with our premium lines even satisfying the stringent requirements of Passive Houses. If you are looking for Passive House windows, you've come to the right place.

For decades, energy codes have pushed European manufacturers to continuously improve window technology, and Zola is proud to have partnered with some of the best suppliers in Europe to create extremely high performance Passive House windows. We offer the most advanced European window technologies including:

  • Overall U values as low as 0.123
  • Triple seals that provide outstanding airtightness (European Level 4, which is the highest level at which a window can perform)
  • Triple, argon-filled glazing of up to 54mm
  • Premium German hardware
  • Tilt & Turn units
  • Expansive Lift Slides and Bifolds
  • Patented, German-engineered Purenit, ™ an insulating material

With Zola, you have the option of three frame qualities – 68mm depth (Classic Wood and Classic Clad), 88mm depth (Thermo Clad, Thermo Wood, and Thermo PVC) or 88mm with an integrated layer of Purenit™ insulation (ThermoPlus Clad, our gold standard Passive House windows).

All 88mm frames come with 1 7/8″ triple glazing that features a glass U-Value of 0.088 BTU/hr/ft2/F (0.5 W/m2/k). Combined with the Purenit™ insulated frame, an overall window U-Value of 0.14 BTU/hr/ft2/F (0.8 W/m2/k) is achieved. Warm edge spacers are standard on all our products.

Andersen Windows Straight Arm Operator, 9 3/8" Arm, Left Hand, 1974 to 1995, Size Width C & CW
Home Improvement (Andersen Windows)
  • Corrosion resistant straight arm operator for units manufactured from 1974 to 1995
  • Left hand, a left hand unit will have the lock on the left hand side viewed from the interior
  • Replaces all previous vintages, including operators with series numbers 7198-17, 7191-2, or 7191 sta
  • The length of the arm from the rivet to the elbow or bend is 9 3/8 inches long
  • Includes nylon shoe, cover, channel and screws, the handle must be purchased separately
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Mohan Glass House, Gurgaon, Manufacturer of Aluminium Window
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Toland Home Garden Toland Home Garden Wooden House Flag Hanger - House Flag Accessory 420123
Lawn & Patio (Toland Home Garden)
  • Toland Home Garden House Flag Accessories will display any ~28 x 40  flag with a top-sleeve and a fabric loop inside
  • Built to withstand the elements and continue displaying your house flags season after season no matter how often you change them out.
  • These decorative hangers look great hung from a hook inside on a door, wall, or in front of a window, as well as outside on a door or from an awning
  • Efficient design will prevent your house flags from blowing off in high winds and will sway or turn rather than create resistance and strain
  • Slide your flag on and clip on simple C-Clamps from your hardware store to the bottom corners of the flag so it sways naturally without flipping over
Verbatim Verbatim 4.7 GB up to 16x Branded Recordable Disc AZO DVD-R 50-Disc Spindle 95101
CE (Verbatim)
  • Compatible with up to 16X DVD-R Hardware;
  • Advanced Azo recording dye optimizes read/write performance;
  • Ideal for recording up to 2 hours of DVD quality home movies and video clips;
  • Archive and back up, up to 4.7GB of important data;
  • Compatible with 16X DVD-R drives from Pioneer, Apple, Sony, Panasonic and others;
  • Ideal for recording up to 2 hours of DVD quality home movies and video clips
  • Archive and back up, up to 4.7GB of important data
  • Read compatible with most DVD-ROM drives and DVD video players
  • Compatible with 8X DVD-R drives from Pioneer, Apple, Sony, Panasonic and others
  • Advanced Azo recording dye optimizes read/write performance
Roxio Easy Cd and Dvd Burning
Software (Roxio)
  • CD/DVD burning software for faster burning and safer back-ups
  • Easily rip, play, edit, organize, and burn digital music
  • Copy CDs and DVDs with 1 click; drag-and-drop photo tools
Clinical Digital Thermometer Best to Read & Monitor Fever Temperature in 15 Seconds by Oral Rectal Underarm & Axillary - Clinical Professional Thermometers & Reliable Readings for Baby, Adult & Children - New Release (July 2015) Modern Mercury Replacement
Baby Product (Generation Guard)
  • RAPIDLY MEASURE kids, infants, adults and animals FOUR TIMES FASTER than conventional competitors orally & rectally utilizing Generation Guard s superior microchip...
  • ENJOY CONFIDENCE in the CLINICAL ACCURACY and RELIABILITY of your premium health care thermometer with our improved build quality. Look no further this is FDA and...
  • JOIN THE HAPPY CLUB of 700+ FIVE STAR REVIEWS Thousands of customers who agree that this is the best digital thermometer they ve had and the best MERCURY FREE GLASS...
  • SAFE and COMFORTABLE reading of BASAL body temperature for ovulation and BBT featuring FLEXIBLE tip and WATERPROOF design with the comfort and safety of your beloved...
  • ADD TO CART NOW you are protected by our 30 day NO QUESTIONS asked money back guarantee. Clinical Digital Thermometers purchased from Generation Guard come with...
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