Why spot-on measurements matter
Perfect Fit blinds are designed to clip neatly onto your window frame, creating a sleek, fuss-free finish. Because they fit so snugly, accuracy is absolutely essential. A blind that’s even a few millimetres out won’t sit correctly, which could affect both the look and how smoothly it operates.
Tools you’ll need at hand
Before you start measuring, gather the basics:
- A reliable metal tape measure (for accuracy)
- A pencil to jot down figures
- A notepad or paper for recording measurements
- A step stool if your windows are tall or tricky to reach
How Perfect Fit blinds are installed
Unlike standard blinds, Perfect Fit blinds don’t require drilling. Instead, they clip directly onto the window frame. This means you’ll be measuring the glass size itself rather than the whole recess or wall area. Getting this part right ensures the frame sits flush without gaps.
Step-by-step measurement process
Follow these simple steps for a precise fit.
Measuring the glass width
Measure the visible glass area of your window – that’s the part not covered by the frame or beading. Take this measurement at the widest point, from edge to edge of the exposed glass.
Measuring the glass height
Do the same for the height: measure the visible glass area from top to bottom, edge to edge. Always record your figures to the nearest millimetre for best results.
Double-check your figures
Even with straightforward windows, mistakes can creep in. Always follow the golden rule: measure twice, cut once. Recheck both your width and height before placing your order.

Common pitfalls to watch out for
Some frequent errors include:
- Measuring the full recess instead of just the glass area
- Forgetting to measure to the nearest millimetre
- Rounding numbers up or down rather than noting them precisely
- Using a soft tape measure that may sag or stretch
Why professionals can make life easier
Measuring Perfect Fit blinds isn’t complicated, but the margin for error is slim. If you’d rather have complete confidence, it’s worth calling in the experts. Kelly’s Blinds provide professional measuring and fitting services, ensuring your blinds are installed perfectly and hassle-free.
Next step once you’ve measured
With accurate measurements in hand, you’re ready to explore styles and finishes. Browse the fantastic selection of Perfect Fit Blinds to find the ideal match for your windows, whether you’re after blackout comfort, light-filtering fabrics, or a clean modern look.
FAQ – How to Measure Perfect Fit Blinds?
Do I measure the whole window or just the glass?
Only measure the visible glass area, excluding the beading or frame.
Should I round my measurements?
No – always measure to the nearest millimetre for maximum accuracy.
Can Perfect Fit blinds be installed on all windows?
They work with most uPVC windows and doors, but always check the product details or ask an expert if you’re unsure.


