UTOPIA Cassette Frame Blinds -Thermal | 40 Colours | Flame Retardant - Blackout
Flame Retardant
Anti Bacterial
Made To Measure
British Made
5 Year Guarantee
Thermal
UTOPIA Cassette Frame Blinds -Thermal | 40 Colours | Flame Retardant - Blackout
Flame Retardant
Anti Bacterial
Made To Measure
British Made
5 Year Guarantee
Thermal
7-10 Working Days
UK Mainland Over £250
FREE
Fire Retardant
Suitable for contract and commercial use.
Made to Measure
Manufactured to your exact sizes.
10 Year Guarantee
Reliable hardware with long-term assurance.
Chain Operated
Smooth sidewinder chain operation.
Utopia Blackout Cassette Roller Blinds
Utopia Blackout Cassette Roller Blinds offer a clean, modern solution for spaces where light control and a neat finish are essential. The aluminium cassette and side channels help reduce light bleed around the edges, making them ideal for bedrooms, media rooms, hotels, care environments, and other contract settings.
The fabric features an acrylic foam blackout backing which is PVC free and fully opaque. It is flame retardant, colour matched on both sides, and designed for everyday domestic and commercial use.
Simply choose your colour, enter your measurements, and select how the blind will be fitted. We manufacture each blind to order and supply it ready to install.
Key features
- Flame retardant blackout fabric suitable for contract use
- Enclosed aluminium cassette with side channels
- PVC free acrylic foam blackout backing
- Smooth sidewinder chain operation with chain tidy
- Made to measure and supplied ready to fit
- Available in 40 colour options
Cassette headbox sizes and projection
Fixed component dimensions for reference and installation planning.
Utopia cassette roller blinds use aluminium headboxes and side channels with fixed external dimensions. The appropriate cassette size is selected automatically based on blind width, drop, and fabric weight to ensure smooth operation and long-term reliability.
| Cassette type | Headbox size (H × D) | Side channel size (W × D) | Typical application |
|---|---|---|---|
| C40-60 | 77 × 73 mm | 55 × 13 mm | Smaller blinds and shorter drops |
| C40-90 | 105 × 95 mm | 55 × 13 mm | Most medium sized blinds |
| C40-120 | 140 × 120 mm | 55 × 13 mm | Wide blinds, long drops, heavier fabrics |
Finished size orders
If you select Overall blind size (finished), your supplied measurements must already allow for the full cassette projection and side channels shown above. These component dimensions are fixed and cannot be reduced.
Headbox selection is based on blind size and fabric weight (typical fabric approx. 400 g/m²). Lighter fabrics may allow a smaller cassette; heavier fabrics may require a larger cassette.
Inside or Outside the Recess
Cassette blinds can be fitted neatly inside the window recess or on the face of the recess for full coverage.
Inside the window recess
Provides a neat, flush finish with the cassette and side channels sitting within the recess. Measure the opening inside the recess and we will apply the correct allowances automatically.
On the face of the recess / wall
Ideal for maximum coverage and light control, or where the recess is not square. If you measure the recess opening and choose face fix, we will manufacture the blind to fully cover the opening.
Colour options
Cassette blind components
Fitting instructions
Download the fitting guide for installation steps and fixing advice.
Download fitting instructions (PDF)
Thermal and Solar Performance
Utopia Blackout Cassette Roller Blinds are designed to help improve comfort and reduce unwanted heat and glare within the home or commercial space. The blackout fabric and cassette system work together to limit solar heat gain and control light levels throughout the day.
The thermal performance of the fabric is measured using internationally recognised metrics, including transmittance, absorption, reflection, and shading co-efficient. These values indicate how effectively the blind reduces heat transfer through the window.
Transmittance refers to the amount of light and heat that passes through the fabric. Lower transmittance means less heat and glare entering the room.
Block / Reflect measures how much heat and light is blocked or reflected away from the window. Higher values indicate better thermal efficiency.
Absorption is the amount of heat absorbed into the fabric itself. Lower absorption helps reduce heat build-up at the window.
Ultraviolet protection indicates how effectively the fabric shields against UV rays, helping to protect furnishings, flooring, and interiors from fading.
Shading Co-efficient compares the solar heat gained through a window with and without a blind installed. A lower result means better performance at reducing solar heat gain.
Practical benefits
- Helps reduce overheating in sunny rooms
- Improves comfort without relying solely on air conditioning
- Reduces glare while maintaining a clean, modern appearance
- Supports energy-efficient building design
| Flame Retardant Certified Rating | BS5867 Part 2B |
|---|---|
| Fabric Style | Plains |
| Features | Flame Retardant, Blackout, Thermal |
| Operation | Chain |
| Delivery | 7-10 Working Days |
| Washing / Cleaning Information Face Fabric | Wipe With Damp Sponge |
| Flame Retardant | Yes |
How do I place an order?
How to Measure for Exact Fit or Outside the Recess Blinds
How to Measure for a Recess Fitted Blind
What does FR or flame retardant mean?
What is the difference between blackout and dimout fabric?
Can I return made-to-measure curtains?
What is your returns policy?
What are your delivery times?
What payment methods do you accept?
Do you install blinds or is it DIY only?
Can I get blackout roller blinds for hotels?
How do I measure for roller blinds?
Are all your blinds flame retardant?
What is the difference between roller blinds and cassette roller blinds?
What types of blinds do you offer?
Customer Product Reviews
Top customer reviews
Reviews with images
Images in this review
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Excellent service as everExcellent service as ever, great advice from the team, real good lead time. Would highly recommend Direct Fabrics0 people found this helpful
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Love this BlindSuper heavy duty, feels so sturdy and robust. It runs smoothly and the room is so dark.0 people found this helpful
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Great cassette blindsVery happy with our UTOPIA Cassette Frame Blind, looks nicer and more robust than another more expensive one we bought and was also faster to deliver. Was easy to install, now we just need some decorating caulk on the sides as our walls are far from straight!0 people found this helpful
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Utopia Cassette
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Incredible BlindI installed this in the office. So easy to install and just works. Highly recommend this product. I put mastic around our uneven walls to get it extra blackout.0 people found this helpful
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Easy website to use and good...Easy website to use and good communication on delivery times etc. Would use again0 people found this helpful
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Works so WellA great blackout blind that works. Impressed with the quality. Clearly heavy duty.0 people found this helpful
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5 StarThis is a quality product. Not the cheapest but clearly quality.0 people found this helpful
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ImpressedThis is a quality blackout blind. No light round the edge. Perfection. Thanks0 people found this helpful
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Great serviceGreat service0 people found this helpful
How to Measure For Curtains, Blinds and Tracks.
Pen and Paper
For recording your
measurements.
Helper
Someone to assist if your
windows are large .
Metal Tape Measure
As this will allow you to get a
rigid full length measurement.
Make sure your curtain tracks and poles are fitted in the position you want.
Choose the type of curtains that you would like and how you want to hang your curtains. See our heading styles guide
We recommend fitting your hardware first before measuring, this avoids any issues with not getting the perfect fit.
Measure your window using our main guide. Quick summary below. Remember wave, pinch, and designer headings require slightly different measurement
Measure in 3 places and take the shortest drop – Floors and ceilings can run out.
Double / Triple check your measurements
Choosing your Curtain Track Width
The width of the curtain track should extend past your window this allows for the curtains to stack back away from your window and allow light in.
Measure your recess and then add on 15cm on either side. For acoustics , we recommend further to fully cover the window and the surrounding area. In our test we added an additional 30cm to the width and also made the curtain floor length.
Wave curtains, for every 100cm of track the curtains will stack circa *18cm
Eyelet curtains, they will stack back circa 10cm per *70cm of track width
Pencil Pleat will stack approx 25% of the track width. eg. 210cm track will stack 52.5%
* all dependent on thickness of fabric
Selecting your Curtain Drop
Where to Measure From for Different Type of Curtains
|
Type of Curtains |
Fitted On |
Where to Measure from - to desired length |
|
Pencil Pleat Curtains |
Curtain Track |
Top of the Track - If using a extra wide track or designer track like silent gliss metropole, then measure from the underside of the track. |
|
Pencil Pleat Curtains |
Curtain Pole |
Measure from small ring at the bottom of eye under the ring, this is where your curtain clips into. |
|
Eyelet Curtains |
Curtain Pole – Only |
Top of the pole *we add on the upstand to our curtains, |
|
Pinch Pleat Curtains |
Curtain Track |
The underside of the track |
|
Wave Curtains |
Curtain Track Designer Pole |
The glider underneath the track. The curtain will sit under the track. |
|
Acoustic Curtains |
See Heading Style of Choice above |
Same but make sure wider than normal ideally 30cm past either side and 30 above. Also to the floor. |
How to Measure for Blinds going Inside the Recess
- Measure the exact width of the recess in three places; at the top of the recess, in the centre of the recess and near the bottom - then take the smallest size.
- Measure the exact drop of the recess in three places on the left hand side of the recess, in the centre of the recess and on the right hand side of the recess - then take the smallest size.
- We will take one cm off the finished width size you have given us, to allow for the blind to pull up and down easily.
- Double check your measurements
- Cord Safety - Mounting Height - We ask for the mounting height of your blinds to allow for the cord to be 150cm off the ground. If mounting at 210cm This is what you enter in the Fitting height box. We make a deduction to ensure the cord is 150cm from the floor. Thus the cord loop will be 60cm
How to Measure Outside of the Recess
- Measure the recess in 3 places on the width and also 3 places on the drop. Take the widest measurement.
- Measure the width of the actual recess plus an additional amount – Usually from 7cm-15cm whatever you think looks appropriate. This is for overlap.
- Measure the exact drop of the recess. The blind would be fitted above the recess, so check the space above and add an amount on to the drop – usually from 7-15cm
- These sizes you have taken will be the size of the finished blind.
- Double check your measurements
- Cord Safety - Mounting Height - We ask for the mounting height of your blinds to allow for the cord to be 150cm off the ground. If mounting at 210cm This is what you enter in the fitting height box. We make a deduction to ensure the cord is 150cm from the floor. Thus the cord loop will be 60cm
Cubicle Tracks you have to measure with right angles from wall to wall where you want the track to go
Draw your room on a piece of paper with a sky view
Now measure from the wall to wall for straight tracks,
L Shape Tracks Measure to a point on the floor and mark with a piece of tape. Then for the other sides measure from the other wall to that point.
Always check for obstructions and fitting issues you may need to work around
SAVE TIME - Send your project requirements, large or small. Sample Lists etc