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Smartfit™ is a ready-to-fit cassette window system. The windows and doors arrive with built-in head flashings, jamb flashings, cavity closers, end dams, sill support bars and clever water management features.

You no longer need to worry about internal tapes, PEF rods or expanding foams. So there’s less onsite materials, waste and handling, saving you time and money.

All you need to do is place the window in the hole and screw into position through an outer fixing fin.

At the end of the day, you can close in a house much faster, and get onto other jobs sooner.

(*available from specific branches – contact us for details)



  • Compliance with NZS 4211
  • Installation system tested in accordance with E2/VM1
  • BRANZ appraised - appraisal number 868 (2014)
  • 10 Year Warranty

Explore SMARTFIT™ products

Hinged Doors
Sliding Doors