At Paragon Windows, we craft both mechanically jointed and fully welded versions of the Spectus Vertical Slider in-house, giving you maximum flexibility to suit diverse project styles, budgets, and conservation requirements — all without compromising on quality or performance.

Whether restoring a period property, meeting conservation area guidelines, or adding traditional character to a new-build, our vertical sliding sash windows deliver timeless aesthetics paired with all the advantages of modern uPVC: low maintenance, outstanding energy efficiency, and enhanced security.

Key Benefits:

• 10-year guarantee for peace of mind

• 128mm front-to-back dimension, ideal for authentic timber box sash replacements

• Sizes up to 1600mm wide and 2400mm high, accommodating a wide range of openings

• Low-line PCE glazing system for a sleek, elegant finish

• Tilt-in facility for easy cleaning from inside

• Optional Georgian bar design to enhance traditional charm

• Excellent weather resistance, built to last in all conditions