Why choose bidirectional lighting?Many ceiling fixtures send all their light downward and leave the ceiling in shadow. The LCSUSP-UD-4FT-AL-40W-40K takes a different approach: as a
bidirectional linear luminaire, it directs 25% of its output upward and 75% downward. The uplight bounces off the ceiling and softens the contrast between the fixture and its surroundings, while the downlight provides useful task lighting for reading, writing and screen work. The result is a more comfortable, more even visual environment, exactly what people look for in
office lighting, classrooms and meeting rooms.
Performance and light qualityPowered at
40W, the fixture delivers 3,412 lumens and is rated as equivalent to 150W, for efficient and uniform illumination. Its 120° beam angle spreads the light generously across the room. The
4000K neutral white is a popular choice for workspaces because it looks clean and bright. With
0-10V dimming compatibility, you can adjust the light level to the task with a compatible 0-10V control, for a video presentation or at the end of the day. A lifetime of 50,000 hours and a 5-year warranty mean fewer replacements and less maintenance, a real advantage in high-ceiling spaces where every service call requires a ladder or a lift.
Construction and installationThe
robust aluminium casing has an exceptionally slim profile, measuring 47.5 in long, 0.79 in wide and 3.74 in high, with an aluminium finish. Installation is by suspension mount, and the
suspension kit is included: the 60-inch suspension cable lets you adjust the height as needed, and the power cord is 70 inches long. The input voltage is 110-260V and the luminaire is suitable for damp locations (IP40 protection). Its operating temperature range is 0 to 40 °C, so in Canada, keep it in heated spaces rather than in an unheated garage or shed. Installation should be done by a qualified electrician, with the power off at the breaker and following the electrical code in force. The spec sheet, with the technical drawing and the specification table, is in the Documentation tab.
ApplicationsIn offices, install several fixtures in parallel rows over
workstations and one above each meeting table. In schools and daycares, they light classrooms, libraries and study areas evenly. In retail, they brighten aisles and cash counters while the uplight keeps the ceiling from looking dark. In clinics, the neutral white is at home in waiting rooms and reception areas, and at home it suits a
home office or a hobby room. For a warmer atmosphere, the
4' bidirectional linear suspended luminaire in 3000K offers the same design, and the
black 4' bidirectional linear suspended luminaire gives a bolder look.
Technical specificationsPower: 40W (equivalent to 150W)
Luminous flux: 3,412 lumens
Colour temperature: 4000K
Light distribution: 25% up, 75% down
Beam angle: 120°
Dimensions: 47.5 in (L) x 0.79 in (W) x 3.74 in (H)
Finish: aluminium
Input voltage: 110-260V
Dimming: 0-10V
Operating temperature: 0 to 40 °C
Location: damp (IP40)
Lifetime: 50,000 hours
Warranty: 5 years
Product code: LCSUSP-UD-4FT-AL-40W-40K
