Using our exclusive, chamfered, putty line sashes and external bar our Authentic Collection is an excellent yet competitively priced, trade window. Designed to replicate the style of timber sash windows, it is available in a range of wood foils and finishes, but not as detailed as our Vintage Collection.


Standard spec

  • Perfectly sealed patented Timberweld® butt jointed corners (see Glossary for more details)
  • A rated as standard - Window Energy Rating by BFRC
  • 10 year guarantee
  • White woodfoil
  • Continuous horns
  • External putty line sashes
  • Tilt restrictors to all sliding sashes to assist with easy cleaning or safety arms*
  • High perfermance Ultralift spring balances
  • Choice of fully suited hardware available in a choice of antique brass, pewter, chrome, satin chrome or white
  • Key locking cam catch
  • 105mm deep bottom rail
  • Coupled frames
  • Exclusive Georgi®Clips where Georgian designs requested ensuring the bars remain attached for life
  • Exclusive cill pads create a weather tiht seal


Optional features

  • Secured by Design approved - an Association of Chief Police Officers (ACPO) for complete peace of mind
  • White gloss
  • Cream wood foil
  • No horns
  • A pair of lockable limit stops to reduce opening initially to 100mm
  • For added ventilation trickle vents to sash or a two position keep which can be locked in open position
  • Egress options for easy exit in the case of fire
  • Colour matched to any Farrow & Ball, RAL, British Standard Colours and other leading brand paint manufactures' colours.  Wood foil only
  • Obscured or etched glass for extra privacy or a decorative finish
  • Large 63 mm bottom rail
  • Welded construction (mitred)
  • Dual foil with different colour finishes inside and out.  Minimum order eight frames

N.B. Due to continued improvements of our products we reserve the right to alter specifications without notice.

System u-value



  • BBA
  • energy saving recommended
  • SBD
  • CE
  • URS
  • TGO

Learn why you get better windows because of these

  • BBA logo
  • ISO logo grey
  • Secured by design logo grey
  • BFRC logo grey
  • Energy Trust logo Grey
<h3>Setting standards, safeguarding interests</h3>
<p>Masterframe have been GGF members since the mid 90s. Our MD has served on the GGF main board and chaired the Home Improvement Executive, FENSA and the BFRC. Membership gives you greater protection on a number of levels.</p>
  • DGC logo grey
  • CE logo grey
How can we help you?

Enter your details and we will contact you to discuss your requirements further