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  4. Cleanroom Lighting

Cleanroom Lighting

Fluorescent and LED Lights
  • Full range of fixtures, including sealed energy-efficient, no-maintenance LED panels, makes it easy to configure the optimal lighting for your application
  • Select 2' x 4' (610 mm x 1219 mm) ceiling module for placement in the ceiling grid, or Teardrop Lights for installation below the grid
  • Flow-Through units are ideal with dense FFU ceiling coverage
  • LED light strips and panels produce less heat to reduce cooling costs
  • Dimmable LED light panels allow brightness adjustments

Terra offers a variety of cleanroom and facility lighting modules.

For applications that do not require 100% FFU ceiling coverage, 2' x 4' (610 mm x 1219 mm) fluorescent or LED modules can be positioned in unused ceiling grids.

For applications that require total or near-total FFU ceiling coverage, teardrop, LED and flow-through lighting modules are available. Teardrop fluorescent lights mount to the ceiling grid in-between the FFUs. Their aerodynamic design does not interfere with the laminar airflow. Each of these single-tube lights requires 6" (152 mm) of vertical clearance below the FFU filter face.

As an alternative to teardrop lights, you can select 2' x 4' (610 mm x 1219 mm) flow-through lights, which are stacked below the FFU. Flow-through lights add 4.75" (121 mm) to the ceiling height but require no vertical clearance below the filter face, making them ideal for low-ceiling cleanrooms.

If energy-use or bulb replacement frequencies are concerns, choose double-stacked light-emitting diode (LED) light strips or 2' x 4' LED panels. The lumen output is similar to fluorescent, but the bulbs can last 5 – 8 times longer, making them nearly no-maintenance. You’ll see a dramatic reduction in heat produced, and a savings of greater than 25% of the energy consumption. Panels drop into unused ceiling bays. The strips are mounted on the ceiling T-grid, so there is no obstruction of laminar airflow.

LED Lights Learn more about the benefits of LED lighting...

led lights
US UL logo CE logo
A. LED Light Panel: 2’ x 4’ (610 x 1219 mm)
Dimmable models meet California Title 24

This sealed light module maintains a positive or negative room pressure and is compatible with ISO 3 – 8 cleanliness standards. Its unique design eliminates crevices and seams that can harbor microbes, making it ideal for bio-pharmaceutical cleanrooms. LED Quantity: 480/panel. Thickness: 0.4" (10mm). Wattage: 80. Color temperature: 6000-6500 K. CE marked (UL listed power supply). Ordering Chart

Dimmable models meet California Title 24 and other low-energy regulations. Standard configuration includes one control knob that dims all lights in a cleanroom. Room-by-room dimming controls available (requires separate Power Distribution Modules); call to discuss your application.

LED lighting strips
ILED strips installed on a cleanroom ceiling grid
LED lighting strips
LED strips double-stacked in
1"W x 3/8"H aluminum track
CE logo
B. LED Lighting Strips
Streamlined LED strips are double stacked and screwed to the ceiling grid T-bar (120 bulbs per meter). They are installed within aluminum housing covered by a clear, cleanable polycarbonate shield. LEDs produce less heat, require less energy and last up to five times longer than fluorescent bulbs (rated for up to 50,000 hours).


Sixteen feet of LEDs produce 9840 lumens (equivalent to a 2' x 4' four-bulb fluorescent fixture). Price includes power supply and installation; specify linear foot at time of order (25-foot minimum). Sign-off drawings will specify light lengths and locations. Ordering Chart

Fluorescent Lights

Ceilling Grid Clean room Lights
2' x 4' (610 mm x 1219 mm)
Fluorescent Ceiling Module
UL logo
C. Ceiling Module: 2' x 4' (610 x 1219 mm)
This 2' x 4' (610 mm x 1219 mm) painted steel housing includes four T8 fluorescent light tubes, with a total output of 9,440 lumens. Price includes installation (specify desired location when ordering). Ordering Chart

ceiling module
ISO 3 2’ x 4’ Fluorescent
Ceiling Module
UL logo
D. ISO 3 Ceiling Module: 2' x 4' (610 x 1219 mm)
Corrosion-, dust- and water- resistant cold-rolled powder-coated steel houses this 2' x 4' (610 mm x 1219 mm) T8 fluorescent light, rated for ISO 3. Four lamps provide a total of 9,547 lumens. Price includes installation (specify desired location when ordering). Ordering Chart

Teardrop light
Teardrop Light
UL logo
E. Teardrop Lights
Ideal for ISO 3 or higher cleanrooms, in which near-100% filter coverage of the ceiling leaves no space for standard fluorescent light modules. This aerodynamic design ensures minimal interference of the laminar airflow; the T8 lamp provides 3,150 lumens. Housing is made of stainless steel. Dimensions: 48.5"L x 2.5"D x 6"H (1232 mm x 51 mm x 152 mm). Price includes installation (specify desired location when ordering).


flow through module
Flow-through lighting module
for fan/filter unit
F. Flow-Through Module
Low-profile, fluorescent-tube module creates a light source underneath the fan/filter unit without obstructing air flow. Attach this “cage” beneath a 2' x 4' (610 mm x 1219 mm) FFU; adds 4.75" (121 mm) to ceiling height. Intensity: 8560 lumens from the four T8 lamps. Must be ordered together with FFU. Ordering Chart

G. Cleanroom Emergency Lighting UPS
This safety system guarantees uninterrupted visibility inside a cleanroom in the event of power loss. It includes an UPS (Uninterrupted Power Supply) to provide one hour of operation for a single fluorescent or LED light fixture. It ensures the safety of your cleanroom and also allows ample time for cleanroom operations to be secured and sensitive samples covered or packaged if fan/filter operation is temporarily disrupted. Must be ordered together with lights and Power Distribution Module (cannot be retrofitted)
Power Requirement:
115VAC/60Hz, 5.4A draw during charging cycle.
Power Output:
750VA, 500W, 60Hz
flow through module
Emergency Lighting UPS

Ordering Information
Cleanroom Illuminators
Module Type
feet (mm)
Total Lumens Voltage Cat. # Price
LED Lights
A LED Light Panel: 2’ x 4’ (610 x 1219) 6000 85-265 VAC/50/60Hz 3800-41 Price
  LED Light Panel: 2’ x 4’ (610 x 1219)
6000 85-265 VAC/50/60Hz 3800-41-DIM Price
B LED Strips: double-stacked fixture with power supply
(price per linear foot [305 mm]; 25-foot minimum)
9840** 120VAC/50/60Hz 3800-40 Price
240VAC/50/60Hz 3800-40-220 Price
Fluorescent Lights
C Ceiling Module 2' x 4' (610 x 1219) 9,440 115VAC / 60H 3800-80 Price
277VAC / 60Hz
D ISO 3 Ceiling Module 2' x 4'
(610 mm x 1219 mm)
9,547 115VAC / 60H 3800-35 Price
277VAC / 60Hz
E ISO 3 Teardrop Light (48.5"L, (1232) 3,150 115VAC / 60H 6704-15A Price
277VAC / 60Hz
F Flow-Through Module 2' x 4' (610 x 1219) * 8,560 115VAC / 60H 6704-77 Price
277VAC / 60Hz 6704-77-277 Price
G Emergency Cleanroom Lighting UPS N/A 115VAC / 60H 3800-83 Price

* Order together with desired FFU.

** Calculation based off of 16 feet of double-stacked LED strip lighting; equivalent to four fluorescent T8 bulbs

*** Requires Power Distribution Module and Control Panel for dimming LED (Order Separately)

EnergySaver Light Control System
Allows centralized on/off light control to reduce energy when room is unoccupied. Order EnergySaver Console.

  Cat. # Price
120VAC 6602-22 Price

Easy-Clean Light Guard
Fits beneath any 2' x 4' (610 mm x 1219 mm) ceiling fixture to allow easy cleaning with most disinfectants. Transparent polycarbonate panel transmits virtually 100% of light. Includes chemical-resistant, noncontaminating gasket.

Cat. # Price
3800-25 Price

Germicidal UV Illuminator
2' x 4' (610 mm x 1219 mm) fixture contains four 254 nm UV tubes for germicidal control. Operates on 115VAC or 277VAC, 60Hz power. More . . .

Cat. # Price
3800-26 Price

Fluorescence-Detection UV Illuminator
2' x 4' (610 mm x 1219 mm) fixture contains four 365 nm UV tubes for fluorescence detection. Operates on 115VAC or 277VAC, 60Hz power.

Cat. # Price
3800-27 Price
Yellow filters available; call for pricing
Cord Adapter
3pin Cord Adapter for FFUs
Connect your Terra lighting module directly to a wall outlet using this 12-foot cord adapter. Ceiling lights are built with a 3-pin electrical connector for integration with a power module in a modular cleanroom or work station. This adapter allows you to bridge the power connection when a power module is not used. Simply plug the 3-pin connector, that terminates in a NEMA 5-15 plus for connection, into the lighting module power cord and fit the other end into a standard power outlet.

  Cat. # Price
Cord Adapter (3-pin) 120VAC, 60Hz 6601-14 Price

File Type File Name Publication Date
Tech Resource (PDF) Calculating Clean Room Cleanliness: How many FFUs and Lights?
This tutorial provides practical tips for correlating the desired cleanliness level (per ISO/FS209 standards) to the required number of fan/filter units (FFUs). Also provides guidelines for specifying lights based on the type of operations being conducted.
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