The Infusion from Blinds By Post is a roller blind fitted in the perfect-fit system - a clip-in frame that grips the rubber gasket on UPVC double-glazed windows with no drilling required. It stands out in this format for its colour breadth: the 21 colourways cover everything from deep neutrals to outright accent colours, making it one of the more varied perfect-fit options at a from-price of £21.42.

Who it suits

The no-drill installation makes this a practical option for renters who cannot or prefer not to fix brackets to walls or UPVC frames. The blind sits within the frame and can be removed cleanly if you move out. The same advantage applies to anyone fitting multiple windows who wants a consistent frameless look without the drilling.

The opacity class is not specified by the retailer for the Infusion range, so confirm with Blinds By Post before ordering whether the fabric is blackout, dimout, or light-filtering. That distinction matters most in bedrooms; for a living room or kitchen, a dimout or light-filtering fabric is often preferable anyway to keep some daytime visibility while the blind is down.

For bathrooms or kitchens, the key question is whether the fabric is moisture-resistant - this is not stated for the Infusion range, so check with the retailer before installing in a wet room. If moisture tolerance is confirmed, the wipe-clean convenience of a roller fabric does suit those environments.

As with all perfect-fit blinds, this system is compatible with UPVC (PVC-U) double-glazed windows only. Wooden or aluminium frames will not accept the clip-in mount in the same way. Before ordering, check that your window has an adequate recess depth to accommodate the slim perfect-fit frame alongside the glass.

The colours

21 colours available

The eleven colourways are notably varied for a perfect-fit range. Concrete, Charcoal, and Taupe anchor the neutral end; Ivory, Calico, and Beige provide warm creams; Pale Blue and Glacier Blue offer two distinct blue options; and then Crimson, Terracotta, and Lime Green introduce genuine accent colours not commonly found in the perfect-fit category. The range is genuinely broad rather than variations on a single theme, which makes it useful if you want to match a specific room scheme rather than defaulting to a neutral.

Price by your dimensions

Made to measure from £21.42. Check Blinds By Post for the price at your exact window size.

At a from-price of £21.42, this is among the more accessibly priced perfect-fit roller blinds. Made-to-measure pricing scales with the blind's width and drop. Measure the window opening accurately - perfect-fit blinds are sized to the frame, not the glass - and check whether Blinds By Post rounds to standard size increments when quoting.

How it compares

Within the perfect-fit roller category, the Infusion's main point of difference is its colour range. Most perfect-fit rollers default to neutral palettes; the inclusion of Crimson, Terracotta, and Lime Green gives decorators more to work with. The from-price is competitive for the category.

If the primary concern is blackout performance, combining a heavier blackout fabric in a perfect-fit frame would reduce edge-leak more effectively than any standard recess-fit roller. For rooms where the blind needs to do thermal work rather than just control light, a cellular or honeycomb blind in the same no-drill format would offer better insulation - though at a higher price point.