Factory producing workshop natural lighting sun tunnel, no power sun tunnel skylight

  • >=50 Units
Lead Time:
Quantity(Units) 1 - 10 >10
Est. Time(days) 7 Negotiable
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Quick Details
Hot Rolled Steel
Place of Origin:
Guangdong, China (Mainland)
Brand Name:
BANFU, BANFU tubular skylight
Model Number:
Light, Fixed roof window skylight
Steel Workshop
55cm (22") diameter
Surface Treatment:
Zinc-Alume flashing
Frame Material:
Metal base with plastic components
Dome Material:
Anti-UV Polycarbonate
Reflective Shaft:
Solid light tube
Diffuser Type:
Flat & curved diffuser
100% energy saving tubular skylight
Supply Ability
Supply Ability:
1000 Set/Sets per Month
Packaging & Delivery
Packaging Details
2 packing ways for optional
1. Individual packing for each component
2. One set was packed in 2 boxes
Lead Time :
Quantity(Units) 1 - 10 >10
Est. Time(days) 7 To be negotiated



What is a Tubular Skylight?    How Do Tubular Skylights Work?   


The picture below shows just how the BANFU really works, in all weathers, from early in the morning to the evening, in summer and winter time, and how much efficiency difference you get in comparison with regular skylights. You will notice: no temperature differences, no shadow on the floor or the walls, abundant light throughout the day! The upper lighting dome absorbs the sunshine sufficiently, after been reflected and enhanced by the sun trapper, the natural light was transmitted to the high reflected light well and guided to the diffuser; the diffuser spread the light to any angle of the space.

As a high efficient, simple install, low cost system,BANFU tubular skylight system can install at any place (flat roof, slope roof) like 

Public facility:shopping mall, supermarket, indoor gym, exhibition hall, zoom, museum;

Industrial building: large scale factory, store,

Military facility: aircraft hangar, maintenance base, equipment warehouse, tunnel;

Civil construction: airport terminal, underground waiting hall, parking lots, school, hospital, government office building, restaurant, residential house, hotel, motel, distribution center, agriculture plant center, breeding center etc.


Details about SPT-550RT:

SPT-550RT (55CM /22”diameter solar natural light tubular skylight system)

*keep lighting by natural light especially shinny in clear sunny days.

Light the dark corner at daytime.


System Specification:

Tube diameter:  550mm

Working Lumens: 16000lm at sunny days

Recommend area: up to 50m2

Potential tube length:  15m


Benefit: polycarbonate lighting dome with high thermal performance.

             Reflectivity tube high to 99.7%

             Assembled fast and easy installation

             25years using time



How many efficiency can the BANFU day lighting system bring?




Our mission is to bring more natural light to your space, no extra maintenance. Much more sufficient sunlight or daylight will bring you more happiness and health.


  1.  Offers more security, happy living and working environment.
  2.  Reduce employee absent time
  3. Reduce eyestrain and lower near sightedness
  4. Increase precious Vitamin D which can strengthen bone, teeth and muscle
  5. Average 10 hours day lighting every day. So there are about 3650 hours free light to enjoy which saves tens of thousands watt electric power.
  6. Reduce about 10-30ton carbon dioxide emission every 1000 square meter
  7. About 2-4years you can recover cost, 2-4 years later there will no electric power cost expenses in the daytime.
  8. Best invest choice and save vast energy. 3-4 times efficiency more than the traditional skylight, and about 2-3 times speeded than the solar panel’s payback.
  9. No extra cost for warm up or cooling
  10. Compact design, no heavy roof carrying.


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                              Packing & Transportation