Sizing guide
Find the right fit for your blind.
Start with the shape and measurements of the bottom rail, not the width of the blind fabric.
Before you choose
Check the shape
Look at the end of the bottom rail. Is the profile oval, round or flat?
Measure in millimetres
For Oval, measure both dimensions across the profile. For Round, measure the diameter. For Flat, measure the flat attachment surface.
Match your rail
Compare your measurements below. If the shape or size is different, ask us before ordering.
Measure the rail, not the end cap. Ideally, measure the rail profile without the end cap, as the cap adds thickness. If you cannot remove it, estimate the rail dimensions by allowing for the extra thickness of the cap. If you are unsure, contact us with a photo and your estimated measurements before ordering.
Snap-on
Oval
25 × 15 mm
Fits oval bottom rail profiles from 25 × 15 mm up to 30 × 16 mm. Check both dimensions and the oval shape before ordering.
This is the Oval snap-on version, not a clip for round or flat rails.
Snap-on
Round
Measure straight across the circular rail profile. Choose by diameter, not circumference.
- Round 15 mm
- Rail: 15 mm diameter
- Round 20 mm
- Rail: 20 mm diameter
- Round 22 mm
- Rail: 22 to 24 mm diameter
Do not choose Oval just because one measurement is similar. The rail shape matters too.
3M adhesive
Flat
Flat profiles 20 mm+
Choose the adhesive version for a flat bottom rail with a flat attachment surface measuring at least 20 mm, as shown in the sizing image.
It sticks to the back of the rail rather than snapping around it. Check the contact position before attaching: the adhesive version is not designed to be repositioned.
Watch the Flat installation guide
Not sure which one fits?
Contact us with your rail measurements and a photo showing its profile before you order.
Ask about sizing