C74 Crank Blackout Unit
A purpose-designed blackout assembly with a crank, enclosed headbox and light-sealing side and bottom channels.
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Blackout units
A dedicated blackout unit addresses the fabric and the light paths around it. The C74–C77 range combines blackout cloth with an enclosed headbox, side and bottom details, baffles and pile seals. Crank and electric versions are available for suitable vertical or overhead glazing.
The finished result depends on the complete installation, including the opening, fixing surfaces and other sources of light in the room. Tell us if the project has a defined light-level or acceptance requirement.
Discuss your requirements
Product systems
Blackout units collection
C75 Electric Blackout Unit
A mains-powered blackout assembly with an enclosed roller, side channels, baffles and pile seals.
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C76 Crank Overhead Blackout Unit
A tensioned blackout assembly for suitable sloping or horizontal roof windows, with manual crank operation.
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C77 Electric Overhead Blackout Unit
A motorised, tensioned blackout system for suitable roof windows where both access and light exclusion matter.
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Match the model to the opening
C74 and C75 serve suitable vertical openings; C76 and C77 use a tensioned overhead arrangement. Manual or electric control is then selected according to reach, frequency of use and available power.
Specify the perimeter
Reveal condition, sill details and service access can affect both light exclusion and installation. We confirm these details with the fabric and system rather than assuming that blackout cloth alone will darken a whole room.
Let’s work through the details
Get a quote.
Plan your project.
Share the products you have in mind, or tell us what the space needs to do. We’ll help you establish the specification and the next step.
- Free initial estimates by email or WhatsApp
- UK-wide supply and installation enquiries
- Supply-only products and component orders
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We aim to reply within 24 hours. Appointment dates and any specialist installation requirements are confirmed by our team.