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uPVC Profile Sizes Explained

uPVC profiles come in different sizes and series. Here's what the sizing means.

Profile sizes and series

Profiles are described by series numbers that broadly indicate frame width or depth in millimetres. Wider series suit larger and sliding systems; narrower suit standard windows.

What to know

Look for this

  • Narrower series — standard windows
  • Wider series — large or sliding systems
  • Series matched to the opening
  • Reinforcement sized to the span
  • Specified per opening when fabricating

Why it matters for your windows

The right size depends on the window's dimensions and type, so it's chosen per opening rather than applied uniformly. We specify it when we measure and fabricate.

Questions

Frequently asked

What sizes do uPVC profiles come in?

A range of series widths — narrower for standard windows, wider for large or sliding systems, matched to each opening.

How is profile size chosen?

By the window's size and type; we specify it per opening when fabricating.

Is a bigger profile better?

Not universally — it's about matching the size to the opening. Over-speccing adds bulk without benefit on small windows.

From our range

What we make

uPVC Sliding Windows

Multi-track windows that need no swing space.

uPVC Casement Windows

Side-hung sashes for full airflow and the tightest seal.

uPVC Performance Systems

Double-glazed acoustic and thermal windows.

Related Guides

You might also need

Related guides covering this topic from other angles — different products, applications, or contexts.

Talk to the maker, not a middleman

Tell us your openings and we'll measure on site, advise, and give you a real quote — factory-direct from our Pannimadai works in Coimbatore.