R80 Red vs Full Phase: Which AG-140 Spectrum for Your Room?
The Grower's Choice AG-140 is one 140 W under canopy bar sold in two spectrums: R80 Red Enhanced and 3K Full Phase. Same housing, same power draw, same price, same mounting and controls. The spectrum is the only choice you make, and it affects output, efficacy, rebate eligibility and how the room looks while you work in it.
Here are the numbers side by side, then a simple way to decide.
AG-140 R80 Red Enhanced vs 3K Full Phase at a glance
Spec | R80 Red Enhanced (AG-140LR) | 3K Full Phase (AG-140LW) |
PPF per bar | 455 µmol/s | 420 µmol/s |
Efficacy (PPE) | 3.25 µmol/J | 3.0 µmol/J |
Input power | 140 W | 140 W |
Light color | Red-enhanced | Balanced white |
DLC listed | Yes | Yes |
ETL listed | Yes | Yes |
Ingress rating | IP65 | IP65 |
Dimming | 0-10V | 0-10V |
Size / weight | 45.8 x 3.1 x 2.5 in, 4.85 lb | 45.8 x 3.1 x 2.5 in, 4.85 lb |
Both versions in our online store run on 120-277 V. The spec sheet also lists 277-480 V versions (AG-140HR and AG-140HW); ask us if your room runs on 480 V.
What the extra 35 µmol/s means
R80 Red Enhanced delivers 455 µmol/s against 420 µmol/s for 3K Full Phase, about 8% more light from the same 140 W. Across a bed, that adds up:
A 4 x 8 ft bed with 4 bars gets 1,820 µmol/s from R80 Red Enhanced or 1,680 µmol/s from 3K Full Phase, for the same 560 W.
A 20-bed room with 80 bars gets 36,400 µmol/s or 33,600 µmol/s, for the same 11.2 kW.
Because the bars cost the same, R80 Red Enhanced also gives you more µmol/s per dollar. For a sizing walkthrough by bed, see how many under canopy light bars you need for 4x4 and 4x8 beds.
Rebates: often the deciding factor
Many utility programs only pay for fixtures on the DLC Horticultural Qualified Products List, and some set their own efficacy floor above DLC's. Both AG-140 spectrums are DLC listed, so either one meets a DLC listing requirement. Where a program sets a higher floor, efficacy decides: at 3.25 µmol/J, R80 Red Enhanced clears California SCE AgEE's 2026 floor of 3.24 µmol/J, and the 3K Full Phase version, at 3.0 µmol/J, does not.
So if your program only requires a DLC listing, either spectrum can qualify; if it sets a floor above 3.0 µmol/J, R80 Red Enhanced is the version that can earn the rebate. Program rules change every year, so check yours before you order; our guide to horticulture LED rebates and how to qualify walks through the checks.
When R80 Red Enhanced is the better pick
Flowering rooms. R80 Red Enhanced is the usual choice for under canopy light in flower, where you want the most photons on lower bud sites per watt.
Rebate-driven projects. If your utility sets an efficacy floor above 3.0 µmol/J, start with R80 Red Enhanced.
Power-limited rooms. When amperage or circuits are the constraint, the higher efficacy gets more light from the same 140 W per bar.
When 3K Full Phase is the better pick
Veg through flower in one room. 3K Full Phase is a balanced white spectrum suited to every growth stage.
Working under the lights. White light makes it easier to see true leaf color when you scout for pests, deficiencies and IPM problems in the lower canopy.
Matching a white top light. If you prefer the room to look the same top to bottom under white fixtures, 3K Full Phase keeps it consistent.
Everything else is the same
Whichever spectrum you choose, the AG-140 is IP65 rated for washdown and IPM spraying, dims 0-10V, and daisy-chains power and data through one connection: up to 10 bars per powered run at 120 V, 19 at 208 V, 22 at 240 V and 24 at 277 V. The Master Controller drives up to 100 bars directly (50 per side), and the AG-140's built-in signal booster lets one group run up to 1,000 bars. For timing in flower, see when to turn on under canopy lights.
Under canopy light is about the lower canopy, whichever spectrum you run. A 2025 peer-reviewed study measured yield gains of up to +24.58% and +29.95% from under canopy lighting (read the study); we summarized it in does under canopy lighting increase yield?
How to order either spectrum
The AG-140 Under Canopy LED Kit comes with 2 or 4 bars in R80 Red Enhanced or 3K Full Phase, a power cord in your voltage, a jumper cord and stands, with or without the Master Controller.
Single AG-140 under canopy bars are sold in both spectrums for larger rooms or add-ons.
Browse all under canopy lights.
Not sure which spectrum fits your room, or whether your utility will pay for it? Ask for a free light plan and we'll model both options and check the rebate rules for your utility.
FAQ
What does R80 mean on the AG-140?
R80 is the red-enhanced spectrum version of the AG-140 (model AG-140LR on 120-277 V). It is rated 455 µmol/s at 3.25 µmol/J.
Is the AG-140 Full Phase or R80 Red DLC listed?
Both are. The AG-140 R80 Red Enhanced and the 3K Full Phase are each DLC listed and ETL listed.
Do R80 Red and Full Phase cost the same?
Yes. Single bars and kits are priced the same in either spectrum, and both draw 140 W.
Can I mix R80 Red and Full Phase bars in one room?
Both versions use the same single power-and-data connection, 0-10V dimming and Master Controller support. If you plan a mixed layout, send it with your light plan request and we'll check the run lengths and grouping.
Which AG-140 spectrum is better for flowering?
R80 Red Enhanced is the usual choice for flowering rooms because it has the higher output and efficacy. 3K Full Phase suits rooms that run veg through flower or where growers want white light to scout the lower canopy.
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