Super Energy Saving Windows & Patio Doors
At A Super Affordable Price!
Manufactured In Medford, New Jersey, USA!



"If you find a window and service as good as ours at a better price...Buy it!"

See Jantek's YouTube Channel

See Jantek's Facebook Page






Click to Download Product Brochure

Click to see Jantek windows reviews



The Jantek American Classic Double Hung Window is our most popular model.  Both the top and bottom sashes tilt in for easy cleaning. The sash and master frames are fusion welded for strength and durability. The five point weather stripping and pocket sill design ensure added convection protection well beyond that of standard technology sloped sills. The multi-chambered maintenance free virgin vinyl frames and insulated Energy Miser II Glass System™   gives you the option of choice of you whole window insulation value of R3, R5 or R6 so you will save on energy bills.


The Jantek American Classic Double Hung comes standard with our proprietary triple pane insulated Energy Miser II Glass System™  and has outstanding NFRC thermal performance certification numbers. Double Pane glass package with an insulation value of R3 is also available. 

The American Classic Double Hung is among the best double hung windows on the market when it comes to a solid combination of high quality, super energy savings, and affordability. 

Double Hung Features

  • Multi-chambered 3 1/4 inch vinyl frames
  • 7/8 inch Tripleinsulated Energy Miser II Glass System™ standard
  • Both sashes tilt in for cleaning
  • DuraSeal™ warm edge spacer
  • Fusion welded sash and frame
  • Vent latches for added security with sashes opened for ventilation 
  • Constant force balancer system for easy reliable opening and closing
  • Double Cam Locks for added security
  • Aluminum frame polymesh Half Screen (full screen optional) 
  • Energy saving five point weather strip and pocket sill design for superior weather resistance
  • Certified by NAMI to meet AAMA DP30/CL30 structural rating 
  • Transferable 55 year non-prorated warranty 
  • Available in AccuBond™ custom colormatch  interior or exterior colors
  • Other Decorative Options available

Energy Star®/ NFRC Performance Ratings with Energy Miser Glass System™:

U-Factor (Insulation Value): Double Glass=.29 (R3) / Triple Glass = .22 (R5)/Triple Krypton .18 (R6)

SHGC: Double Glass= .28/ Triple Glass = .24

Air Leakage Rating: .2

Condensation Resistance: Double Glass = 56 / Triple Glass = 71

Visible Transmittance: Double Glass=.53/ Triple Glass = .42