Using standard Ovolo extrusions our Classic Collection is an excellent yet competitively priced, trade window. Designed to match other WHS Halo casement ranges, it is available in a wide variety of foils and finishes and is ever popular with installers, but not as detailed as our Vintage Collection.


Standard spec

  • 147mm featured outerframe
  • Ovolo 3 chamber slim top sash**
  • Ovolo 3 chamber large bottom sash
  • 147 cill profile
  • Black concealed gaskets
  • 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 key locking cam, CC9
  • 1 no. Antique Brass pole eye 
  • 2 no. Antique Brass scroll handles
  • 4mm Low Iron: 16mm spacer: 4mm Low E EN 0.05 (Argon Gas)
  • Warm edge spacer bars 
  • 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)
  • 2 no, Chrome, Pewter, Satin Chrome, or White limit stops LS5
  • 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 piece projection cill (27/62/102/142mm projection)
  • Real feel plant on georgian bar with duplex bars in cavity
  • Georgi Clips® patent GB 2359325
  • Ovolo 3 chamber deep bottom rail
  • Fixing lugs
  • Bay cills, posts & trims
  • Antique Brass or white ‘D’ handles
  • Chrome, Pewter, Satin Chrome or White fittings
  • Arched head or arched infill
  • 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

1.5W/m2 K


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

Learn why you get better windows because of these

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<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>
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