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

  • 147mm featured outerframe
  • Putty line 3 chamber slim top sash**
  • Putty line 3 chamber large bottom sash
  • 147 cill profile
  • Black concealed gaskets
  • Warm Edge Spacer
  • Tilt restrictors to all sliding sashes
  • 2 Part ‘lift in/lift out’ pivot bars
  • Ultralift balances (10 year warranty)
  • Balance retaining clips
  • Antique Brass  tilt latch knobs on bottom sash**
  • Antique Brass locking cam, CC9 with single face fixed keep
  • 1 no. Antique Brass pole eye
  • 2 no. Antique Brass scroll handles
  • 4mm Loe Iron: 16mm spacer: 4mm Low E EN 0.05 (Argon Gas)
  • Cill gaskets
  • Access slots
  • Concealed drainage
  • BFRC A rated

** Depending on Size/Weight of the Sash

Chargeable extras

  • 133mm featured outerframe (with 147mm cill)
  • White woodgrain effect foil (147 frame option only)
  • Real feel plant on georgian bar with duplex bars in cavity
  • Putty line 3 chamber deep bottom rail
  • 2 piece projection cill (27/62/102/142mm projection)
  • 2 No Chrome, Pewter, Satin Chrome or White limit stops (LS5)
  • Bay cills, posts & trims
  • Plant on decorative horns (gloss only)
  • Continuous horns to upper sashes with wrap around end cap
  • Trickle vents, in upper sash only (additional pole eye supplied)
  • 2 no. brass effect, white or chrome limit stops, LS5
  • K3, 2 stage keeps
  • Non locking cams, CC8
  • Brass effect or white ‘D’ handles
  • Chrome, Pewter, Satin Chrome or white fittings
  • Fixing lugs
  • Arched head or arched infill
  • Georgi Clips® patent GB 2359325
  • Sash Secure® upgrade
  • Sashminder magnetic locking device

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
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