When procurement specifications include slim-format linear tubes, end up demanding patron fluorescent tubes t4 because their diameter, fixation and electrical interfaces matter in installations where space, retrofit-fit and energy use count. These tubes are not just smaller—they enable tighter fixture envelopes, lower thermal build-up and improved visual consistency when properly selected.

Format & key specs of Patron T4 linear fluorescent lamps

The “T4” designation corresponds to ~12 mm diameter (approx. 4/8″) in fluorescent tube nomenclature. Typical spec range: 6-20 W, lengths from ~200 mm up to ~650 mm depending on wattage. For example a 12 W T4 tube may deliver ~760 lm at ~17 in length. For procurement: check base type (commonly G5 miniature bi-pin for T4), length, lumen output, colour temperature (3000 K/4000 K/6500 K) and rated life hours (often ~10 000 h for T4 format). Because Patron offers a full portfolio you’ll find multiple wattages, lengths and CRI/CT options—important when replacing or specifying for smaller luminaires, canopy lighting, coves or compact systems.

Retrofit & service-use for compact applications

Using patron t4 linear fluorescent lamps in compact luminaires (under-cabinet, shelf lighting, shallow ceiling troughs) gives you extra margin for heat, fit and maintenance. When selecting: ensure fixture mounting depth allows tube length + pins + wiring clearance; ensure ballast or driver is compatible (for pre-heat, instant start or electronic ballast type as required). Because T4 tubes generate less diameter and allow lower profile fixtures, they’re ideal where height or enclosure depth is constrained. Field note: old fixtures designed for T8 or T12 might need adapter or new lampholder if you move to T4—check before order.

Compact fluorescent tubes & inventory management

Referring to patron compact fluorescent tubes, you may also consider compact variants of the T4 size or very small linear tubes used in control cabinets, spot fixtures etc. From a procurement perspective:

order full batch to maintain colour and output consistency across work zones
keep 2-3 % spare for maintenance (the compact format tends to have more custom fixture use)
verify packaging, traceability, part numbers; Patron gives authorised distributor info in its catalogue.
confirm lead time and MOQ because less common sizes might have longer supply time

Specification & installer checklist

Before finalising orders or installation:

Confirm diameter: T4 (~12 mm) vs T5 (~16 mm) vs T8 (~26 mm).
Confirm base type: G5 for linear T4 tubes commonly.
Check length: for example, many T4 tubes list lengths between 200-650 mm depending on wattage.
Check colour temperature & CRI: For general lighting 4000 K / CRI 80 typical; for display or retail you might need 3000 K / CRI 90.
Check ballast: The existing ballast must match the tube wattage, starting type and voltage; or plan to convert to electronic ballast if upgrading.
Confirm fixture fit: shallow ceilings, profile fittings require tubes with correct length and no protrusion; compact tubes may help retain flush finish.
Inventory logistics: Store tubes horizontally, in dry environment, away from vibration; label batches for future servicing.

Why choose Bank of Lamps

Official European distributor with stock in Latvia
Direct B2B sales across EU (Germany, France, Netherlands, Spain, Baltics)
Full documentation and original manufacturer warranty
Fast dispatch from central warehouse
No project design, no custom solutions — just verified wholesale supply