Home | Products | Replacement Windows | 505 Series Single Hung

505 Series Single Hung

505 Series - Single Hung

  • Fusion welded beveled frame & sash for strength and durability.
  • Heatseal® warm edge spacer system for excellent thermal efficiency and drastic reduction in the possibility of condensation on the inside of the window.
  • Full integral interlock with double weather-stripping.
  • Heavy gauge fully extruded handle on bottom sash.
  • Fiberglass mesh half screens standard on all windows.
  • Available in Replacement and New Construction applications.

Full 3¼" Depth Welded Mainframe with beveled colonial exterior features curves that are not only beautiful, but also allow for maximum weld surface resulting in strength and years of long lasting performance.
Optional foam-filled insulated extrusions add energy efficiency in Deluxe version only.
(Insulation type may vary during the manufacturing process)
The sill dam wall is mortised into the jamb on our 505 Series, virtually eliminating any leaks that may occur at corner seals.
Recessed tilt latches on the 505 Series give the window a streamlined appearance as well as holding the sash securely in place. 
The slim sash lock and tamper-proof keeper of the 505 Series not only adds beauty to your window but also ensures smooth operation.
The Bulb Gasket Seal improves thermal performance, lowers drafts, and provides better acoustic insulation.
The 505 Series is a single hung window where only the bottom sash is operational. The only screen option for this window is a stationary half screen.

Our company offers three exterior color selections in addition to the standard Euro-White option to give your home a distinct look and enhance its curb appeal. You can also special order custom exterior colors from a virtually unlimited selection of paints. Our paints are environmentally safe and durable, giving your exterior a vibrant and long-lasting color finish.

Interior Options

Standard Euro-White finish and
Standard Euro-White Lock

Optional Almond frame
and Optional Almond lock

Optional Cocoa frame
and Optional Cocoa lock

Exterior Colors





All colors except Euro-White are available at an additional charge.
All colors except Euro-White are available at an additional charge. Colors on your monitor may not match the product's actual color. Please visit a local dealer to view actual color samples.
          Energy Star Comparison To
Glazing Option U-Value SHGC VT CR Minimum* Energy Star Minimum
Dual Glazed              
Clear Glass 0.45 0.60 0.63 46 0.30 Does not qualify
With ESP 0.28 0.30 0.54 62 0.30   7% Better
Deluxe 0.26 0.30 0.54 62 0.30 13% Better
Triple Glazed              
With ESP 0.22 0.26 0.43 69 0.30 27% Better
Deluxe 0.20 0.26 0.43 72 0.30 33% Better

U-Value, SHGC, VT, CR values may slightly change for windows made with GBG (Grids Between Glass)
SHGC - Solar Heat Gain Coefficient          
VT - Visible Transmittance            
CR - Condensation Resistance            
ESP - Energy Saving Package            
CIT - Currently In Test              
 * Northern Climate Zone              
      Industry Comparison To  
  Our Windows Minimum Industry Minimum  
AAMA Rating R50  R15      
Air Infiltration cfm/ft2 0.01    0.3    3000% Better
Water Penetration mph 57   33       73% Better  
Structural Integrity mph 171     94       82% Better  
Water Penetration mph - Specifies wind load pressure in mph window can withstand  
without leaking, under rain equivalent to 8" per hour.        
Structural Integrity mph - Wind load in mph the window can withstand before breaking.  

All result numbers are based on tested window sample by NFRC & AMMA testing window guidelines. Use for comparison
purposes only. Actual values may vary depending on installation, size of the window, and other conditions.



5/8" Flat Grid
between glass

11/16" Contour Grid
between glass


Are you looking for a stunning design detail to instantly set your home apart both inside and out? A choice of
decorative grids for your windows & doors can highlight the architectural style that speaks to you.

Grids between glass (GBG) consist of aluminum bars sealed in the insulating airspace between the two panes of
glass. Because the interior and exterior glass surfaces are not affected, cleaning your windows is a much easier
task. GBG grids on two tone windows are available with matching interior and exterior colors.


Most Common Grid Patterns

                   Colonial                     Prairie      Diamond


Our company offers factory-installed half screen with heavy-duty handle.
Screens are removable from the inside for convenient storage.
Optional locking screen provides an additional safety measure.*
(* Insect screen cannot support significant amounts of weight. Please keep small children and pets away from windows when only insect screens are in use.)
Our company offers ThruVision® Screen standard on the Insul-Tec - Single Hung to improve the view through the window while protecting the interior from insects and allowing proper ventilation.

ThruVision® Screen

(standard on all OKNA Windows)

Competitors Screens