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Description
cmh grow light bulb Growers Choice 1,000 Watt Double-Ended CMH Bulb, 4,200K – VinehydroponicsGrowers Choice 1,000 Watt Double Ended CMH Bulb, 4K CMH Descriotion Introducing the worlds first 1,000W Ceramic Metal Halide lamp. As a direct replacement for your existing 1,000 watt HID fixtures, this 1,000W CMH lamp provides the absolute highest photosynthetically active radiation (PAR) to your specialty flowering plants. Emitting an astonishing PPFD and with an extremely high CRI this lamp will not only increase your overall dry weight but will
Growers Choice 1,000 Watt Double-Ended CMH Bulb, 4K -CMH
Descriotion
Introducing the world’s first 1,000W Ceramic Metal Halide lamp. As a direct replacement for your existing 1,000 watt HID fixtures, this 1,000W CMH lamp provides the absolute highest photosynthetically active radiation (PAR) to your specialty flowering plants. Emitting an astonishing PPFD and with an extremely high CRI this lamp will not only increase your overall dry weight but will also raise the quality of your harvest. Grower’s Choice has continuously produced the world’s most accurate spectrum, closely replicating the sheer power of the sun. By using existing double-ended fixtures with our new 1,000 watt CMH lamp you can completely overhaul the lighting in your facility, and enjoy watching your yields increase as your temperatures decrease.
Features:
- Upgrades your standard DE fixture to an CMH/LEC fixture to instantly increase yield per watt
- Produces more PAR per watt than standard Metal Halide
- Richest spectrum on the market
- CRI of 98 makes this lamp the closest solution to sunlight available
- Promotes extremely tight internodal spacing, leading to more flowering sites and a fuller canopy
- Offers significant improvement in spectral quality over standard Metal Halide
Performance Data:
- Light output (Lumens @ 100 Hours): 110,000
- Lumens per Watt (lm/w): 110
- Rated life (Hours @ 10 Hour / start): 10,000
- Correlated Color Temperature (K): 4,200
- Color Rendering Index (CRI) or (Ra): ≥98
- Photon flux (μmol/s): 1930
- Burning Position: HOR±15°
Specifications:
| Brand | Growers Choice |
|---|---|
| SKU | GC1000W4KCMH |
| Weight (lb.) | 0.31 |
| Prop 65 | No |
| Warranty | 1 Year |
| UPC | |
| Lead Time | This product ships in 1-3 Business Days |
| UL Listed | No |
| Lighting Type | CMH - Double Ended |
| Bulb Orientation | Horizontal |
| Bulb Type | Double Ended Ceramic Metal Halide |
| Color Temp (Kelvin) | 4200 K |
| Color Rendering Index (CRI) | ≥98 |
| Bulb Lumens | 110,000 |
| Estimated Life Hours | 10,000 |
| Exact Watts | 1000 Watts |
| Amps | 4.7A |
| Voltage | 220 Volts |
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.7 ★★★★★
Based on 461 reviews
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Product Reviews
★★★★★ 4
Nice divider
Color: Black, Size: 6 Panel
Nice divider. Set up is a bear. I am a bit concerned with stability. Overall I like it.
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Reviewed in the United States on March 12, 2026
★★★★★ 5
Great privacy room divider
Color: Black, Size: 6 Panel, Color: Black, Size: 6 Panel
I got this room divider for our game room that shares the garage/laundry room, to separate the spaces. I was happy that it was relatively easy to put together in less than an hour with nothing more than a screwdriver (provided) although I used a small handheld drill.
The instructions were pretty straightforward and easy to understand as everything was labeled.
I have 2 small grandkids at home running around while I put this together so my timeline to completion might be longer than others.
It recommends 2 people to assemble, but I was able to complete alone in about 40 minutes total and as I said I used a small handheld drill, (although it does come with a small Philips screwdriver) which is the only tool you need for assembly.
The first two panels took me about 20 minutes but the other 4 were simple repeats after the initial 2. After all 6 panels were assembled the plastic clips to piece them together were literally a "SNAP" to put on.
The poles are made of metal and the panels are made of a very sturdy almost canvas like fabric. When held up to the light not a lot shined through so very good for privacy.
You can snap them together in sections and have 2 separate panels of 3 or what ever configuration you want. They are easy to move and bend around furniture or other obstacles, also fold flat together if you need to put them aside for storage.
This worked out just as we had planned, very easy to move around when needed and I am very happy with this product. I loved how simple it was to put together, easy instructions, and the durability and functionality of it.
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Reviewed in the United States on December 29, 2024
★★★★★ 5
Good
Color: Black, Size: 6 Panel
Love it , just what so needed , easy to put together (some what ) …
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Reviewed in the United States on May 16, 2026
★★★★★ 3
Decent for the price. Instructions suck but most people should be able to figure it out. More below.
Color: Black, Size: 6 Panel, Color: Black, Size: 6 Panel
SUMMARY:
3 stars from me because it's firmly average. It's fine for the price. Assembly and materials are alright but I can see some caveats depending on your circumstances. Assembly instructions do a subpar job of pointing out some details.
ASSEMBLY INSTRUCTIONS:
Maybe it's because I'm autistic and/or building model kits and assembling stuff is my jam, but I honestly thought people were exaggerating when they were complaining about the instructions and I'd be able to flex my ~superior assembly skills.~ I was wrong! These instructions genuinely suck, and whoever is responsible for making them should be ashamed.
The instructions do a poor job of calling out some details regarding orientation of parts, and some of the images do not actually match the physical parts.
For example, it does not really outline the assembly of the end panels clearly, and I can see someone accidentally using the wrong poles. I've drawn over a photo to show what you should do to try and make it clearer. Additionally, the manual shows a flathead screw for bolting the feet into position, but the actual screw is not a flathead. It also does not point out the counterbore, so if you aren't paying attention you may put the foot pads onto the wrong side of the foot. It's also missing the fact that you need to use another one of the plastic pieces when you finish assembling a panel.
ACTUAL ASSEMBLY & MATERIALS:
To their credit, all of my bags were clearly labeled. The assembly process wasn't difficult. It's mostly just tedious and requires a fair amount of space. I was able to assemble it by myself without any real difficulty. However, the way it's assembled means two things.
One, the fabric parts aren't removable without disassembly. So if you want to use this in an environment where they would require cleaning, I would seriously recommend looking for another option. Or, you could buy this just to use the frame pieces and then somehow buy or make your own fabric pieces designed to be removable with velcro or something.
Two, because of the materials I really don't have a lot of faith in this thing surviving disassembly and reassembly. Like a lot of sorta-cheap-but-convenient furniture, it uses those spring-button connections and plastic inserts with self-tapping screws. Those things are not really meant to be disassembled and rethreaded. It also relies a lot on the tension of the poles and the fabric to keep everything rigid and squared, which I think puts a lot of pressure on the aforementioned buttons, plastic inserts, and the hollow metal rods. So I feel like that will also cause issues with disassembly and reassembly.
Basically once this thing is assembled, it's not really meant to be disassembled. The best you can do is spot-clean the fabric if you need to.
Speaking of the fabric, I didn't see any labels on them or anything in the manual that says what they are, but they feel like some kind of polyester. They generate static electricity pretty easily, and pet hair and debris sticks easily. So that's another downside of them not being easily removable.
For the most part it does seem pretty stable. The poles seem to be pretty uniform in length so they're all making contact with my floor. Obviously this isn't structural so it shouldn't be supporting anything, but the two main feet seem to be doing fine with keeping this thing upright.
CLOSING THOUGHTS:
Really, it's fine for what it is, but it could be better in a lot of little ways and the substandard quality of the instructions just seems unprofessional to me, which is why I'm being so harsh with my rating. Depending on your needs and environment you may want to consider a different option. Preferably one that is made to be disassembled with better materials, and/or one with fabric pieces made to be removed easily.
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Reviewed in the United States on May 28, 2023
★★★★★ 1
Not as it seems
Color: Black, Size: 6 Panel
these are awful... Each individual panel is fine, but when you put it together it can barely stand up, and the clips that hold it together keep popping off. Steer clear of this item.
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Reviewed in the United States on April 7, 2026