Rex Light is best known as a brand for commercial luminaires and fittings – ceiling and wall housings, IP65 battens and similar products are sold under the Rex Light name in Eastern European markets.
Within that ecosystem, Rex Light Fluorescent Tubes form the conventional light-source piece: T8 linear lamps for general lighting and utility applications, matched to the same wattages and lengths as standard commercial fixtures. Fluorescent tubes remain relevant in facilities that depend on wide, consistent illumination and stable long-hour performance. For basic replacements in hallways, stairwells and shared offices, maintenance teams often rely on straightforward, fixture-friendly options like starlight fluorescent tubes. When projects span multiple fixture types or require broader compatibility, planners frequently turn to the adaptable European ranges of starlicht fluorescent tubes. Commercial interiors looking for balanced output and predictable colour performance commonly integrate dependable, general-purpose lines such as spl lighting fluorescent tubes. Retail shelving, educational rooms and light-critical workspaces often add spectrum fluorescent tubes to ensure stable visual consistency across larger areas. And in technical zones or industrial facilities where electrical conformity, reliability and long run-time behaviour matter, specifiers complete their setup with the robust, professional-grade solutions from schrack fluorescent tubes.

In real-world projects, Rex Light Fluorescent Tubes are used to:

maintain existing T8 installations in shops, corridors, stairwells and technical rooms,
give a predictable, brand-backed alternative to completely anonymous “white box” tubes,
offer a simple path to keep Rex Light luminaires running while future LED upgrades are planned.

Construction and Light Characteristics of Rex Light Fluorescent Tubes

Technically, Rex Light Fluorescent Tubes follow the standard T8 fluorescent design that most installers already know:

T8 glass tube (26 mm diameter)
- Linear glass envelope with phosphor coating inside.
- Typical T8 lengths in the range (depending on wattage):
  - ~450 mm (15 W class),
  - ~600 mm (18 W class),
  - ~1200 mm (36 W class).
G13 bi-pin caps
- Two pins at each end, compatible with virtually all T8 battens, damp-proof fittings and modular ceiling luminaires.
Gas discharge system
- Low-pressure inert gas plus a small quantity of mercury.
- When the lamp starts, an electric arc generates UV radiation, which the phosphor converts into visible light.
Phosphor and colour
- Triphosphor coatings tuned to standard colour temperatures such as:
  - 2700–3000 K warm white (for cozy or hospitality-style light),
  - 4000 K neutral white (the default for offices and corridors),
  - 6400–6500 K daylight (used in workshops, garages and technical rooms).

From a designer’s point of view, that means Rex Light Fluorescent Tubes behave like any quality T8: wide 360° emission, CRI around 80, and light colour that can be matched to other triphosphor tubes or LED retrofits.

Assortment Overview of Rex Light Fluorescent Tubes

Distributors that work with Rex Light typically focus on the most useful, high-turnover T8 variants rather than an oversized catalogue. You can expect Rex Light Fluorescent Tubes to be available in a tight but practical ladder:

Core Wattages and Lengths

15 W T8 Rex Light Fluorescent Tubes
- Approx. 450 mm long.
- Used in short wall luminaires, compact ceiling fittings and some signage bodies.
18 W T8 Rex Light Fluorescent Tubes
- Approx. 600 mm long.
- The standard “half-length” lamp for small corridors, staircases, toilets and utility rooms.
36 W T8 Rex Light Fluorescent Tubes
- Approx. 1200 mm long (classic 4-foot tube).
- Used in single and twin battens, trunking systems and recessed ceiling luminaires across retail and office spaces.

Typical Colour Temperatures

Within those wattages, Rex Light Fluorescent Tubes generally follow three colour options:

Warm white (≈2700–3000 K)
- For residential areas, hotel corridors, cafés and lounges.
Neutral white (≈4000 K)
- The default for most commercial and educational interiors; balances comfort and visual clarity.
Daylight (≈6400–6500 K)
- For workshops, garages, technical rooms, and areas where high contrast is important.

Lifetime is typically in the 10,000–20,000 h range for triphosphor T8 tubes operated on proper gear, which is in line with other mid-market fluorescent brands.

Where Rex Light Fluorescent Tubes Are Used

Because they match standard T8 dimensions and caps, Rex Light Fluorescent Tubes can be dropped into almost any existing T8 luminaire:

Retail and small commercial spaces
- 18 W and 36 W tubes in open battens, trunking or recessed fittings over aisles and counters.
- Neutral white versions keep shelves and merchandise looking clean and natural.
Stairwells and circulation areas
- 18 W T8 Rex Light Fluorescent Tubes in 600 mm fixtures along corridors, staircases and service routes.
Garages, workshops and plant rooms
- 36 W or 18 W daylight tubes where good visibility and colour distinction on tools and wiring are critical
Utility and back-of-house zones
- 15 W short tubes in compact luminaires in storage rooms, technical closets and small ancillary spaces.

In many of these locations, fluorescent luminaires are still mechanically sound, ballast failures are rare, and a full LED refit isn’t yet justified. Rex Light Fluorescent Tubes let you stabilise light levels and colour using the infrastructure you already have.

How to Select Rex Light Fluorescent Tubes for a Project

Treat the choice of Rex Light Fluorescent Tubes like a small engineering decision rather than “grab another 36 W tube”.

1. Confirm Type, Base and Length

Check that the fixture uses T8, 26 mm tubes with G13 caps.
Read the markings on the old lamp or measure:
- ~450 mm → 15 W T8 class,
- ~600 mm → 18 W T8 class,
- ~1200 mm → 36 W T8 class.

Type and length must match exactly; you can’t substitute a 36 W tube into an 18 W fitting even if the diameter is the same.

2. Match Wattage to Ballast and Luminaire Label

Look at the luminaire label: “1 × 18 W T8” means you should install an 18 W Rex Light Fluorescent Tube; “2 × 36 W T8” means two 36 W tubes, and so on.
On magnetic gear, the ballast is designed for a specific wattage. Wrong lamps can cause:
- hard starting,
- flicker and low light output,
- overheating and shortened ballast life

3. Choose Colour Temperature for the Space

Use the colour ladder in a deliberate way:

Warm white (2700–3000 K)
- For reception areas, hotels, lounges and anywhere you want a soft, cosy feel.
Neutral white (4000 K)
- Default for offices, schools, small shops and circulation spaces – it feels bright without looking harsh.
Daylight (6400–6500 K)
- For workshops, garages, technical rooms, cold storage and places with detailed visual work

Keep one colour temperature per visual zone. Mixing warm and daylight tubes in one line makes the installation look messy and is tiring for occupants’ eyes.

4. Consider Light Level and Uniformity

If users are satisfied with current brightness, a like-for-like Rex Light Fluorescent Tube (same wattage and CCT) will preserve that experience.
If you’re upgrading from very warm to neutral or daylight, remember that cooler whites are perceived as brighter, even at similar lumen levels – you may not need to increase wattage.

Practical Performance and Lifetime of Rex Light Fluorescent Tubes

While exact numbers depend on the specific SKU and ballast, you can plan around these typical ranges for Rex Light Fluorescent Tubes (standard T8 triphosphor tubes):

Luminous efficacy
- Around 70–90 lm/W, depending on wattage and colour.
Colour rendering
- CRI roughly 80, good enough for retail, offices and general work areas.
Rated life
- Approximately 10,000–20,000 hours on suitable gear.
Behaviour
- Full light within a short warm-up on magnetic ballast + starter.
- Fast, almost flicker-free starting and better lumen maintenance on electronic ballast.

For high-hour applications (12–16 h/day), that typically translates into 2–4 years between planned group relamps if you aim for consistent light levels and minimal random outages.

Safety, Disposal and Maintenance of Rex Light Fluorescent Tubes

Even with a relatively simple product, good practice around Rex Light Fluorescent Tubes makes a big difference:

Electrical compatibility
- Always pair tubes with ballasts and starters rated for the same wattage and T8 technology.
- If you’re replacing very old gear, inspect starters and magnetic ballasts; a failing ballast can damage new lamps quickly.
Handling and installation
- Support the tube with both hands, rotate gently in the G13 lampholders until it locks.
- Do not twist against the glass or force the pins into damaged holders.
Thermal considerations
- Respect maximum wattage on the luminaire label; over-wattage can overheat ballasts, lampholders and diffusers.
- Keep diffusers and housings reasonably clean so tubes and gear can cool properly.
Mercury and disposal
- Like all T8 tubes, Rex Light Fluorescent Tubes contain a small amount of mercury and must go through proper lamp/WEEE recycling, not general waste.

Procurement Strategy for Rex Light Fluorescent Tubes

For wholesalers, facility managers and electrical contractors, the easiest way to manage Rex Light Fluorescent Tubes is as a compact, standardised subset of your conventional-lamp portfolio:

Build a short matrix such as:
- 15 W T8 / 4000 K for short fittings,
- 18 W T8 / 3000 K and 4000 K for 600 mm luminaires,
- 36 W T8 / 3000 K, 4000 K and 6500 K for 1200 mm battens and trunking.
Order strictly by EAN / internal article code so wattage, length and colour temperature match across all replacements and projects.
Use Rex Light Fluorescent Tubes primarily where:
- existing T8 gear is healthy,
- run-hours and energy costs are acceptable,
- or where custom luminaires make LED conversion complex.

At the same time, keep a medium-term plan to pair Rex Light luminaires with LED tubes or new LED fittings in the most energy-critical areas, while relying on Rex Light Fluorescent Tubes to keep the rest of the installation stable, uniform and easy to maintain.