Engineered for maximum value, our Heritage Collection is designed with price in mind, so lighter weight components are used. We don’t however lower our standards; all Heritage products are produced to the same ISO policies, and afforded the same care and attention as our heavier duty Classic, Authentic or Vintage Collections.


Standard spec

  • 133mm featured outerframe
  • Putty line 3 chamber slim top sash**
  • Putty line 3 chamber large bottom sash
  • 147mm cill profile
  • Black concealed gaskets
  • Balance retaining clips
  • White plastic tilt latch keys to bottom sashes**
  • White non locking cam, (CC1) with 2 stage keep**
  • Aluminiumbead incorporating lift handle
  • 4mm  16mm spacer: 4mm Low E EN 0.05 (Argon gas)
  • White spacer bars
  • Cill gaskets
  • Access slots
  • Ultralift balances (10 year warranty)**
  • Concealed drainage
  • Tilt in for easy cleaning**
  • Ovolo beading internally


** Depending on size and weight of sash

Chargeable extras

  • 2 no. white, Antique Brass or Chrome limit stops, LS5
  • Plant on decorative horns
  • Trickle vents in sash only
  • 2 piece projecting cills (27/62/102/142mm projection)
  • Internal 18mm Georgian or plant on external only
  • Fixing lugs
  • Bays cills, posts & trims
  • Arched head
  • Sash Secure® upgrade
  • Sashminder magnetic locking device
  • U Value upgrades available

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

System u-value

1.5W/m2 K


  • 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
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