127mm (5") vertical blind slats are the wider option often used in larger windows, patio doors and commercial installations, giving fuller coverage with fewer slats per blind. If your headrail is still sound, replacing just the slats is a quick, cost-effective way to refresh the look without buying a whole new blind.

Every slat is made to measure and cut to your exact drop, so it fits your existing track whether your blind came from us, Hillarys, Argos, Dunelm, or another major retailer.

Browse our 127mm range in plain, textured and jacquard fabrics. Blackout options give complete privacy and light control, while our waterproof, easy-clean slats suit kitchens, bathrooms and conservatories.

Need the 89mm (3.5") width instead? See our 89mm replacement slats, or check our measuring guide if you're not sure which size you need.