MODEL ALPHA™ FRAME
A slimline architectural frame designed to sit neatly around the opening.
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BLOCKER MODEL ALPHA™ — Made-to-Measure Total Blackout Blind
A slimline, made-to-measure framed blackout system combining BLOCKER Pleated Blackout Fabric with a precision-fit perimeter designed to control the light ordinary blackout blinds leave around the edges.
£200.00
Taxes included.
Shipping calculated at checkout.
Made to measure in the UK · MODEL ALPHA™ framed system · TRUSEAL™ on four sides
A precision-fit blackout system designed to control the light gaps ordinary roller blinds leave behind. Made to your measurements and configured for your window.
- Made to the measurements you submit
- Designed for edge-to-edge light control
- Clear measuring guide before you order
- Help from our team before and after you order
SEE IT IN ACTION
FROM DAYLIGHT TO DARKNESS.
The easiest way to understand BLOCKER is to see it working. Watch the pleated blind travel across the opening and see how the framed system changes the room when it closes.
THE PROBLEM
BLACKOUT FABRIC IS ONLY HALF THE JOB.
An opaque blind can stop light passing through the material and still leave a bright line around the top, sides or bottom. BLOCKER treats the window as a complete opening, using a pleated blackout blind inside a slim framed system rather than leaving the fabric edges exposed.
- Light leaking around the sides
- A bright line beneath the blind
- Glare at sunrise
- Street lights visible at night
THE BLOCKER SYSTEM
A SMARTER WAY TO CONTROL THE OPENING.
BLOCKER MODEL ALPHA™ pairs BLOCKER Pleated Blackout Fabric with a slimline framed system built around the opening, so the blind is guided and contained rather than hanging with exposed edges.
SLIMLINE MODEL ALPHA™ FRAME
A compact contemporary frame creates the perimeter of the system while keeping the finished installation visually restrained.
PLEATED BLACKOUT FABRIC
BLOCKER Pleated Blackout Fabric is a specialist pleated blackout material selected for strong light control and privacy.
GUIDED HAND OPERATION
The blind moves through the framed system using the pull rod for straightforward manual control.
COLOUR-MATCHED THRESHOLD
A 20mm threshold is specified to coordinate with the selected frame finish.
FOUR-SIDED TRUSEAL™
Flexible perimeter sealing on all four sides, designed to accommodate small irregularities around the recess and support a cleaner finished blackout seal.
MADE TO MEASURE
Every system is ordered to the dimensions selected for the individual opening.
ENGINEERED INTO EVERY BLOCKER
THE DETAILS THAT MAKE THE DIFFERENCE.
A blackout result depends on more than fabric colour. Frame geometry, fabric construction, guided movement and the way the system meets the recess all matter.
BLOCKER PLEATED BLACKOUT FABRIC
Specialist pleated blackout fabric selected for strong light control and privacy.
COLOUR-MATCHED THRESHOLD
A coordinated lower threshold integrated into the framed system.
HAND OPERATION
Smooth manual operation using the integrated pull rod.
TRUSEAL™ PERIMETER
Flexible four-sided sealing designed to help accommodate small irregularities around the recess and support a cleaner blackout finish.
MADE TO MEASURE
Produced to the dimensions submitted for the individual window.
SEE THE DIFFERENCE
ONE WINDOW. TWO WORLDS.
Standard blackout blinds block light through the fabric. BLOCKER is designed to tackle the gaps around it too.
The difference is not simply darker fabric. BLOCKER changes how the blind meets the opening.
STANDARD BLACKOUT BLIND
Opaque fabric. Visible perimeter light.
BLOCKER
A fitted blackout system designed to control light at the perimeter.
WHAT YOU GET
BUILT AROUND ONE WINDOW.
EDGE LIGHT CONTROL
Designed to address the light gaps ordinary blackout blinds leave around the perimeter.
MADE TO MEASURE
Built around the dimensions supplied for the individual window.
FIT SUPPORT
Use the measuring guide, and contact us before manufacture if the opening is unusual.
SLIMLINE FRAMED SYSTEM
The pleated blind operates inside a MODEL ALPHA™ frame rather than hanging with exposed edges.
HOME INSTALLATION
Designed to be fitted at home with ordinary tools, following the supplied instructions.
WINDOW COMPATIBILITY
Check depth, handles, locks and opening direction before ordering.
PREMIUM FINISH
A clean architectural appearance that suits the room with the lights on as well as off.
SUPPORT BEFORE YOU ORDER
Send us photographs and measurements whenever you are uncertain.
THE BLOCKER SPECIFICATION
THE TECHNICAL CHOICES ARE ALREADY MADE.
You should not need to understand a manufacturer’s configuration system to order a blackout blind. We standardise the core BLOCKER specification and leave you the choices that matter for your window.
MODEL ALPHA™
Slimline made-to-measure framed blackout architecture.
BLOCKER PLEATED BLACKOUT FABRIC
Specialist pleated fabric selected for blackout applications.
20MM COLOUR-MATCHED THRESHOLD
Coordinated with the selected frame finish.
FOUR-SIDED TRUSEAL™
Flexible perimeter sealing supplied as standard.
MADE TO MEASURE IN THE UK
Produced for the dimensions submitted for the individual opening.
YOUR WINDOW LABEL
Add an optional room/window name for easier multi-window ordering.
You choose the finish, opening side and dimensions. We take care of the underlying BLOCKER specification.
A BETTER FINISH AROUND REAL-WORLD WINDOWS
SMALL IRREGULARITIES SHOULDN'T BECOME LIGHT GAPS.
Window recesses are not always perfectly straight. Every BLOCKER MODEL ALPHA™ is specified with TRUSEAL™ around all four sides — a flexible perimeter fitting seal designed to follow small irregularities between the frame and surrounding recess.
Accurate measuring is still essential. TRUSEAL™ is not a substitute for ordering the correct size.
FLEXIBLE
Compresses around small variations in the fitting surface.
CLEAN
Designed to support a neat finished installation.
BLACKOUT SUPPORT
Helps close small perimeter gaps around the fitted system.
INTEGRATED AS STANDARD
TRUSEAL™ is part of the BLOCKER MODEL ALPHA™ specification rather than another technical decision the customer has to make.
Cross-section: the compressible seal sits between the MODEL ALPHA™ frame and the recess wall, following small irregularities in the opening.
FITTING
MADE TO MEASURE. DESIGNED TO FIT AT HOME.
BLOCKER arrives as frame sections that push-fit together, then fix into the recess. It is a competent-DIY job rather than a tool-free one: you will need a drill, a screwdriver, a spirit level and a silicone gun, and the fitting instructions ask you to seal the edges and top to get the best blackout and thermal result.
WHAT ARRIVES
WHAT'S IN THE BOX.
Listed from the fitting instructions supplied with this system. Nothing here is assumed.
FRAME SECTIONS
Top, bottom and side frames, supplied separately and push-fitted together.
THE BLIND
BLOCKER Pleated Blackout Fabric with its operating cords, inside the frame.
FIXING SCREWS
25mm black screws for fixing the frame into the recess.
SCREW HOLE COVERS
Caps to finish the fixing points.
FITTING INSTRUCTIONS
The step-by-step fitting guide for this system.
NOT SUPPLIED
Wall plugs and packers or shims, plus the tools listed in the fitting guide.
Tools you will need: drill, screwdriver, 8mm HSS bit, 2mm steel bit, spirit level, tape measure, pencil and a silicone gun.
MORE THAN DARKNESS
COMFORT BUILT INTO THE BLIND.
A framed blind does more than control light. Holding a fabric layer inside a frame that meets the recess closely creates a more controlled layer at the window, which can contribute to comfort through changing seasons.
INDEPENDENTLY RESEARCHED THERMAL PERFORMANCE
The underlying framed blind technology has been independently evaluated at the University of Salford's Energy House 2.0.
YEAR-ROUND COMFORT
The system is designed to help reduce unwanted heat transfer through the window.
A COMPLETE LAYER AT THE OPENING
The framed installation and four-sided TRUSEAL™ perimeter work together to close the gaps an unframed blind leaves open.
REAL-WORLD RESULTS VARY
Thermal performance varies with the fabric specification, window, glazing and quality of installation.
HOW BLOCKER COMPARES
HOW BLOCKER COMPARES.
Four ways people try to darken a room, and what each approach is typically designed to do.
| Consideration | BLOCKER | Standard blackout roller | Blackout curtains | Temporary blackout film |
|---|---|---|---|---|
| Perimeter light control | Strong — framed on all four sides with a fitted seal | Depends — fabric only, edges usually open | Depends — overlap helps, edges still open | Not typical — film covers glass, not the opening |
| Framed system | Strong | Not typical | Not typical | Not typical |
| Made to measure | Strong | Depends | Depends | Not typical |
| Pleated blackout fabric | Strong | Not typical — usually a flat roller fabric | Not typical | Not typical |
| Window still operable when open | Strong — the blind stacks to one side | Strong | Moderate | Not typical — film stays on the glass |
| Thermal performance researched | Strong — independently evaluated framed system | Not typical | Moderate — depends on lining | Not typical |
| Integrated finished appearance | Strong | Moderate | Depends on the room | Not typical |
| UK manufacture | Strong | Depends on supplier | Depends on supplier | Depends on supplier |
| Long hardware warranty | Depends — see warranty terms | Depends on supplier | Not typical | Not typical |
Comparison describes how each approach is typically designed, not any specific competing product. Individual products vary — always check the specification of what you are considering.
BUY MADE-TO-MEASURE WITH CONFIDENCE
MADE TO MEASURE, WITH SUPPORT.
If you are uncertain about the recess, handles or measurements, contact us before ordering. Send a straight-on photograph of the window, a side-angle photograph showing the recess depth, a close-up of the handles, and your six measurements — we will check it with you before anything is made.
BUILT WITH REASSURANCE
MADE TO MEASURE IN THE UK.
Every BLOCKER MODEL ALPHA™ is made to measure in the UK, to the dimensions you submit for your window.
MADE TO MEASURE IN THE UK
Every BLOCKER MODEL ALPHA™ is produced in the UK to the specification submitted for the individual opening.
BUILT ON A PROVEN SYSTEM
A NEW BRAND. AN ESTABLISHED PRODUCT SYSTEM.
BLOCKER MODEL ALPHA™ is a focused blackout proposition: a slimline framed system, specialist pleated blackout fabric and a four-sided TRUSEAL™ perimeter, made to measure in the UK.
- MODEL ALPHA™ framed system
- UK made-to-measure manufacture
- Specialist blackout fabric
BEFORE YOU ORDER
QUESTIONS, ANSWERED.
What makes BLOCKER different from a normal blackout blind?
A normal blackout roller may use opaque fabric while still leaving gaps around the perimeter. BLOCKER is a made-to-measure pleated blind inside a slimline frame, so the system addresses the opening rather than the fabric alone.
How do I measure?
Measure the internal width at the top, middle and bottom, and the internal height at the left, centre and right. Order using the smallest figure in each direction. The full measuring guide walks through every step.
Why do I measure three widths and three heights?
Window openings are often slightly uneven. Six measurements identify the narrowest width and shortest height, so the blind is not made larger than the available opening.
Do I need to make a deduction?
No. Enter the exact measurements you took and allow the manufacturing system to apply any required fitting allowance. Do not subtract an arbitrary few millimetres of your own.
Can you help me check an unusual window?
Yes. Send a straight-on photograph of the window, a side-angle photograph showing the recess depth, a close-up of the handles and your six measurements. We will review them before you order.
Does BLOCKER fit every window?
No made-to-measure system fits every opening. Compatibility depends on dimensions, obstructions and how the window opens. Use the window types guide and the measuring guide before ordering.
Can I order in inches?
Yes. Switch the unit to inches in the configurator. Everything is converted to millimetres for manufacture, and both figures travel with your order so you can check them.
What is BLOCKER MODEL ALPHA™?
MODEL ALPHA™ is the BLOCKER framed blackout system: a slimline frame around the opening with pleated blackout fabric guided inside it, rather than a flat sheet of fabric hanging in front of the glass.
What fabric does BLOCKER use?
BLOCKER Pleated Blackout Fabric — a specialist pleated blackout material selected for strong light control and privacy.
What is TRUSEAL™?
TRUSEAL™ is a flexible four-sided perimeter fitting seal designed to accommodate small irregularities around the recess and support a cleaner finished blackout seal. It is included as standard on every BLOCKER MODEL ALPHA™.
Is BLOCKER made in the UK?
Yes. Every BLOCKER MODEL ALPHA™ is made to measure in the UK to the dimensions you submit.
Does BLOCKER help with thermal performance?
The underlying framed blind technology has been independently evaluated at the University of Salford’s Energy House 2.0. The actual benefit depends on the fabric specification, the window and glazing, the dimensions and the quality of installation.
How is BLOCKER installed?
You assemble the frame, position it in the recess, drill and fix it, then seal the edges and test the blind in daylight. It needs a drill and basic tools. The full installation guide covers each stage.
What if my recess is not perfectly straight?
Measure carefully at several points and order to the smallest figures. TRUSEAL™ helps with small fitting-surface irregularities, but it does not correct an incorrectly sized blind.
Can I change my measurements after ordering?
Contact us immediately. Once manufacture has started, made-to-measure dimensions may no longer be changeable.
READY FOR A PROPERLY DARK ROOM?
BUILD YOUR BLOCKER.
Enter your measurements and we will make the blind for that opening.
Made to measure in the UK • MODEL ALPHA™ slimline system • Measuring support
Customer Reviews
Overall rating: 4.4 / 5 from 100 reviews.
I love the minimal appearance almost looks like part of the window itself.
Fits perfectly, choice of size was amazing. Easy to install. Color was a lighter shade compared to the display image. Works well. Love it
These blinds are absolutely amazing and have drastically impacted my quality of sleep within the past weeks. My room is positioned in a way which the sun rises directly into.
This is an inexpensive, easy option to darken and cool a room.
Excellent purchase. I really love it. I bought it for my bedroom because blackout courtin doesn't work in this season.
10/10 blackout
The custom fit is spot on. It fits the window perfectly and looks really neat.
Good blind and the measurements were correct. Installation took a little patience but the finished result looks great.
I was sceptical about the 'total blackout' claim, but it genuinely surprised me.
I really like the slimline design. It sits neatly against the window and doesn’t look bulky at all.
What a difference. The room stays dark even when the sun is hitting the window directly.
Excellent quality for price
So many years of using ordinary blinds and didn't realise how much difference proper blackout would make until we got these.
The blackout is just like it looks in the videos, the room gets really dark. The updates on my order were clear too, and everything arrived on time and well packaged.
Good experience from ordering to fitting
Took a little patience putting it together, but once fitted it was worth it. Barely any light coming through.
Fantastic product! I’ll definitely get more for the other rooms.
The blinds are really easy to open and close, fitting was straightforward and I had them up in no time.
Nice quality and the material feels sturdy.
It fits the window well and does a good job.
The fabric blocks the light really well, and the frame helps stop the light coming in around the sides. Love it
Found something that actually works! Really happy with these
Very effective
Getting the measurements right was the part I was most worried about, but the guidance made it much easier
Fantastic blackout
Installation was easier than expected also the blind itself moves smoothly too.
Absolutely brilliant product
Love how dark it makes the room
I really like that the it's designed around the whole window rather than just the fabric. The edges are covered much better than they were with our old blind.
Good value for money.
Amazing
Really happy with these. Fit the window perfectly and look great
Great product very easy to operate
Arrived safely, Everything was exactly as ordered
They make the room feel much darker, especially in the morning and look good too.
Looks great, works great Can't really ask for much more.
Installing these was really easy and the instructions were clear and simple to follow.
Nice fit
Delivery was slightly delayed, but everything was packed really securely. The blind was completely undamaged and looks great.
I was a little unsure about measuring the window myself, but the fit came out perfectly.