There’s a unique feeling of confidence that comes from knowing your home has ClimateGuard Windows from ReNU. Windows that are not only beautiful–their fusion-welded vinyl sash and main frame structure makes them incredibly strong and tough as well. Years of operation and harsh weather won’t diminish their quality or performance.

Peace of mind is all point fusion welding into every ClimateGuard Window.


  1. Beveled exterior master frame
  2. Multiple insulating air chambers help to reduce conduction and increase energy efficiency.
  3. Extra thick extrusion walls provide ultimate welding strength.
  4. Exclusive triple lift rails for ease of operation.
  5. Meeting rail interlock gives protection from the weather as well as added security.
  6. Honey comb configuration for added strength and durability.
  7. Full-capture sill for added protection from air and water infiltration.
  8. Weather stripping made of wool pile is used thru out the entire unit for superior protection against air infiltration.
  9. 7/8″ insulated glass unit is standard, with warm-edge technology spacer system.
  10. Hidden screen track for added beauty.



  • Fusion-welded sash and master frame for added strength.
  • Tilt-in sashes for ease of cleaning.
  • Full balance covers help protect against air infiltration and add a finished look to the window interior.
  • Genuine Caldwell spiral balancers to eliminate sash cords, weights and pulleys, and make opening and closing the window easier.
  • Triple-barrier weather stripping at all sash points for protection from air, water, dirt and noise infiltration.
  • Color-coordinated tilt latches, lock and keeper for a clean, consistent appearance.
  • Color-coordinated dual vent locks limit the movement of the sashes from the interior and exterior while allowing for ventilation.


Other options available:

  • High performance LoE2 glass with argon gas, available with u factor down to an amazing .21!
  • Choose from flat or beveled grids, colored wood looks, or brass along with etched glass options.
  • Full or half fiberglass screens for all models.
  • Models available in white, beige, cocoa, along with 5 wood look laminates, custom color exteriors available.

Double Hung

dblhungpicTop and bottom lites both open for ventilation. Half screen moves up and down depending on whether the top or bottom is open. Both top and bottom tilt in for easy cleaning of outside glass from inside your home.

2-Lite Slider 

2litepicBoth lites roll on brass wheels towards each other for ventilationfrom either side. Half screens move from side to side depending on the side opened for ventilation. Both lites lift out for easy cleaning of outside glass from inside your home. The tracks are also removable for easy cleaning.


3litepicConsists of one fixed lite in the middle with two rolling end vents. End ventsroll towards middle with separate screens for each. Both end liteslift out for easy cleaning of outside glass from inside your home.

Picture/Fixed Window

fixedliteThis window does not move or open for ventilation.

Bay Window

bayThis window does not move or open for ventilation.

Bow Window

bowThis window does not move or open for ventilation.

Casement Window

casementCasement windows allow for 100% ventilation, along with modern stylish appearance, NOT OFFERED BY any other style of window.


Low-E Glass is for Low-Emissivity. The glass is coated on the inside of the outside pane with 2 microscopically thin, optically transparent layers of silver sandwiched between layers of anti-reflective metal oxide coatings. See your sales representative for more details. Low-E2 is virtually invisible to the naked eye.

Argon Gas

An odorless, colorless, harmless gaseous chemical element placed inside between the two panes of glass. Argon molecules are heavier than oxygen and thus move slower. Because they move slower they also transmit heat and cold slower; however, the best benefit for many is sound abatement; it’s quieter.

Obscure Glass

Typically used for bathroom windows. It’s frosted as not to see clearly in or out.

Colonial Grids

Gives the illusion of smaller window panes within a window. The grids are placed inside, between the two panes of glass, making it easy for cleaning

Full Screens

Required only if you want to open both top and bottom of a double hung window at the same time or both sides of a 2-lite roller window at the same time.