The Montero Perfect Fit from Blinds By Post is a made-to-measure roller blind supplied in a clip-in perfect-fit frame for UPVC double-glazed windows, available in 30 finishes from £51.84. What makes this range worth attention is that it explicitly carries both blackout and standard (light-filtering) variants within the same collection - several finishes are listed in a "Blockout" version alongside a non-blockout counterpart, giving you a direct choice of opacity class in the same colour.

Who it suits

If you have UPVC windows and want a blackout roller without drilling, the Montero is a directly relevant option. Bedrooms are the obvious use case: the Blinds By Post Blockout fabric designation means the retailer is claiming blackout opacity, though as with any blackout roller, some light will still enter around the frame edges. The perfect-fit clip-in frame reduces that edge-leakage more than an inside-recess drilled bracket, because the frame sits flush with the window's rubber gasket.

The non-blockout variants - Sand, Light Blue - are better suited to living rooms and home offices where some daylight is wanted alongside privacy. The from-price of £51.84 puts this into mid-range territory within the perfect-fit category.

The perfect-fit format requires UPVC windows with a suitable rubber gasket and adequate recess depth. It does not work on timber or aluminium frames, so confirm your window type before ordering.

The colours

30 colours available

The 30 finishes divide clearly into two groups. The Blockout finishes cover Light Lemon, Nude, Tofu, Sand, Black, Light Blue, and Stone Blue - a range that runs from near-white warm tones through neutrals to darker shades and one accent colour (Red). The non-blockout finishes are Sand, Black, Light Blue, and Mouse Grey. The practical upshot is that if you want a warm off-white (Nude, Tofu) or the Stone Blue colourway in blackout, this range has them, whereas the non-blockout variants are more limited in palette. Mouse Grey appears only in the non-blockout version, so if that colour suits your room, note that opacity is light-filtering rather than blockout.

Price by your dimensions

Made to measure from £51.84. Check Blinds By Post for the price at your exact window size.

A from-price of £51.84 is a fair mid-range entry point for a made-to-measure perfect-fit roller with blackout options. Price scales by width and drop in the standard way. When measuring for a perfect-fit blind, use the dimensions of the glass pane rather than the outer window frame.

How it compares

The Montero's principal differentiator within the perfect-fit roller category is the explicit side-by-side availability of blackout and light-filtering variants in matching colourways - useful if you have different rooms requiring different opacity but want a consistent palette across the house.

Against a venetian blind in a perfect-fit frame, the Montero roller gives you a definitive blackout option (with the Blockout variants), whereas a venetian's blackout performance depends on slat closure rather than fabric opacity. For straightforward bedroom blackout, the roller with a proper blockout fabric is generally the more reliable approach. If you want precise in-use light adjustment - admitting light at an angle without fully raising the blind - a venetian suits you better than any roller.

For thermal performance, neither a roller nor a venetian in a perfect-fit frame approaches a cellular or honeycomb blind. If insulation is the priority, a pleated or honeycomb blind designed for your window type would be more effective.

On care: polyester roller fabrics like this are straightforward to maintain. Vacuum with a brush attachment to remove dust build-up, and spot-clean marks with a damp cloth and mild soap. Avoid soaking the fabric. The perfect-fit frame itself wipes down cleanly with a damp cloth; no specialist products are needed.