Boxed External Venetian Blind
A facade sun-shading blind whose slats rise into an aluminium cassette above the window and run in guides at both sides. Z-shaped or C-shaped slats, Cassette height, Slat and cassette colour, Plaster flange and window head insulation, Slat tilt and blind position
Details
Category: Window Coverings › Venetian And Vertical Blinds › Slat And Louvre Blinds
By Huu Khanh Nguyen · Updated November 5, 2026
Parameters
| Name | Default | Unit |
|---|---|---|
| Width | 1200 | mm |
| Height | 1360 | mm |
| Cassette Height | 270 | mm |
| Slat Shape | Z-90 | |
| Slat Colour | slatAnthracite | |
| Cassette Colour | slatSilverGrey | |
| Plaster Flange | true | |
| Window Head Insulation | false | |
| Slat Tilt | 20 | |
| Blind Position | 1 | |
| Cassette Depth | boxHeight == 223 || boxHeight == 273 || boxHeight == 313 || boxHeight == 353 ? 150 : 146 | mm |
| Wall Thickness | 2.2 | mm |
| Slat Width | slatType == 'Z-90' ? 93 : 80 | mm |
| Bottom Bar Height | slatType == 'Z-90' ? 14 : 13 | mm |
| Slat Pitch | slatType == 'Z-90' ? 82 : 72 | mm |
| Guide Inset | 25 | mm |
| Slat Length | sizeX - 2 * slatInset | mm |
| Slat Count | Math.floor((sizeZ - boxHeight - barHeight) / slatPitch) - 1 | |
| Tilt Rise | slatWidth * Math.sin(Math.abs(tilt) * Math.PI / 180) / 2 | mm |
| Stack Pitch | Math.min(slatPitch, (boxHeight - 2 * wallThickness - barHeight - 26 - 2 * tiltRise) / Math.max(slatCount - 1, 1)) | mm |
| Rail Bottom | (1 - dropFraction) * (sizeZ - boxHeight + wallThickness) | mm |
| Ladders | [[2,2,2,2,2,2,2,3,3,3,3,3,3,3,3,3,3,4,4,4,4,4,4,4,4,4,4,5,5,5,5,5,5,5,5,5,5,6],[2,2,2,2,2,2,3,3,3,3,3,3,3,3,3,4,4,4,4,4,4,4,4,4,5,5,5,5,5,5,5,5,5,6,6,6,6,6],[2,2,2,2,2,3,3,3,3,3,3,3,3,4,4,4,4,4,4,4,4,5,5,5,5,5,5,5,5,6,6,6,6,6,6,6,6,6],[2,2,2,2,3,3,3,3,3,3,3,4,4,4,4,4,4,4,5,5,5,5,5,5,5,6,6,6,6,6,6,6,6,6,6,6,6,6]][sizeZ <= 2500 ? 0 : sizeZ <= 3000 ? 1 : sizeZ <= 4000 ? 2 : 3][Math.min(37, Math.max(0, Math.floor((sizeX - 800) / 100)))] |