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Roof blind Topfix VMS: Windproof horizontal sun protection fabric for VELUX® Modular Skylights


In response to a request by VELUX®, RENSON® has designed the Topfix® for installation on the VELUX® Modular Skylights.

Our Topfix® with patented technology needs special mounting feet. It functions by means of a special protocol for use in a building management system, approved by VELUX®. This protocol is required to ensure a combined function between the VELUX® Modular Skylights system and Topfix® VMS.

The combination of VELUX® Modular Skylights and Topfix® VMS is an optimal product solution that has been designed in cooperation between VELUX® and RENSON®. Thanks to these features and the maximum dimensions up to 4000 x 3000 mm (W x P), the Topfix® VMS is ideal for applications in hospitals, rest homes, offices, schools, atriums, business centres.

Product group
Product application
Patented technology
Type of sunprotecion
Application: renovation / construction
Technical specifications
Dimensions ends of box (HxB)
Fixscreen® technology
Wind Scale (EN 13561:2004)
Garanteed wind resistance (km/h)
Sound reduction: Closed
Thermal valuesThermal Uf valuesthermische waarden: f-waarde
Depth window frame
Depth window frame
Manual operation
Manual control: x positions
Cord control
Rod: fixed
Rod: detachable tulip
Rod: Wechselmedien oogwindwerk
Electrical operation
1 piece height < or =
Manual control: maximum width
Manual control: maximum height
Electrical control: maximum width
Electrical control: maximum height
Manual control: maximum width coupled
Electrical control: maximum width coupled
Maximum height coupled
Material & Finish
Material box
Material side channels & bottom rail
Finishing: E6/EV1
Finishing: RAL
Finishing: Bicolor
Finishing: Special colour
Thermal breaks
Material ends of box
Dimensions ends of box (HxB)
Ends of box in white
Ends of box in beige
Ends of box in gray
Ends of box in black
Ends of box in RAL (on request)
Ends of box and box in same colour
Side channels in aluminium
Side channels: Steel cables
Dimensions side channels (BxD/H)
Dimensions side channels coupled (BxD/H)
Material: Endcaps roller barrel
Endcaps bottom rail in white
Endcaps roller bar in beige
Endcaps roller bar in gray
Endcaps roller bar in black
Endcaps roller bar in E6/EV1
Endcaps roller bar in RAL