Round Bay Lights

Brighten large, open areas, such as warehouses and manufacturing spaces. Use them to replace old high-intensity discharge (HID) lights—they’ll hang from the same chain. IP rated and UL listed for wet locations, these lights are sealed against washdowns. They’ll also keep out dust. The lens is made of polycarbonate to resist impact. These lights are also known as UFO lights.
Lights rated IP66 are protected against high-pressure washdowns. Lights rated IP69K are protected against high-temperature, high-pressure washdowns, such as those used for sanitizing. Lights rated NEMA 4X are protected against washdowns and corrosive liquids.
Lights that meet NSF/ANSI 2 splash zone are safe to use in food processing areas with splashing liquid.
Styles B, C, D, and E last longer when used at high temperatures than Style A, thanks to larger heat sinks and thermally protected drivers. Each light has exactly the same light appearance, so they’ll look the same if you’re using multiple. Styles B, C, and D can be threaded onto a conduit to create and rigid mount. Styles D and E are the best choice for food environments that require sanitizing washdowns. They’re domed so water drains off and debris doesn’t settle.
Add a motion sensor (sold separately) so your light only turns on when there’s movement, saving energy.
Add an emergency backup battery (sold separately) to keep your light running if the power goes out. They help your light meet UL 924, which ensures it will stay powered for at least 90 minutes during an outage.
Lights | ||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Overall | Motion Sensors | Emergency Backup Batteries | ||||||||||||||||||
| Style | Dia. | Ht. | For Ceiling Ht. | Brightness, Lumens | Wattage | Voltage | Light Appearance | Light Setting | Housing Material | For Conduit Trade Size | Mounting Hardware Included | Environmental Rating | Specifications Met | Choose a Color | Each | Each | Each | |||
Built-In LED—Polycarbonate Plastic Lens | ||||||||||||||||||||
Hook, Thread-On Mount | ||||||||||||||||||||
| C | 14 5/8" | 7 3/4" | 25'-35' | 24,000 27,000 30,000 | 150W 170W 200W | 120-347V AC | Neutral (3,500K), Neutral (4,000K), Cool (5,000K) | Dimmable | Powder-Coated Aluminum | 3/4 | No | IP66, NEMA 4X, IK10 | NSF/ANSI 2 Splash Zone, DLC Listed, UL Listed, C-UL Listed | 9434N72 | 0000000 | 9434N73 | 000000 | 9434N45 | 0000000 | |
| C | 14 5/8" | 7 3/4" | 25'-35' | 24,000 27,000 30,000 | 150W 170W 200W | 277-480V AC | Neutral (3,500K), Neutral (4,000K), Cool (5,000K) | Dimmable | Powder-Coated Aluminum | 3/4 | No | IP66, NEMA 4X, IK10 | NSF/ANSI 2 Splash Zone, DLC Listed, UL Listed, C-UL Listed | White | 9434N18 | 000000 | 9434N73 | 00000 | 9434N45 | 000000 |
Linear Bay Lights
With more surface area than round bay lights, these fixtures produce softer light with less glare. Use them to replace old fluorescent lights and illuminate large, open areas with high ceilings. Rated for use in damp locations, these lights withstand humidity and moisture.
Styles B-D have thermally protected drivers and larger heat sinks than other bay lights, so they’ll last longer at higher temperatures. Their LEDs have a consistent color temperature, which helps maintain a uniform appearance across multiple lights.
Style B lights are compatible with an emergency backup battery (sold separately), so they’ll stay lit for 90 minutes if the power goes out. The battery meets UL 924 standards.
Style D direct some light upward to reduce glare and improve visual comfort. They’re most effective when used with a white ceiling. These lights can be mounted in several ways to fit your space—suspension, ceiling, hook, and conduit mounting hardware is all sold separately.


Overall | |||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Style | For Ceiling Ht. | Brightness, lumens | Wattage | Voltage | Light Appearance | Lg. | Wd. | Ht. | Light Setting | Light Distribution | Housing Material | Mounting Hardware Included | Specifications Met | Each | |
Wide Beam | |||||||||||||||
| B | 12'-25' | 24,000 27,000 30,000 | 159W 181W 198W | 120-277V AC | Neutral (4,000K), Cool (5,000K) | 22 7/8" | 11 5/8" | 2 1/2" | Dimmable | __ | Aluminum | Yes | CSA Certified, CSA-US Certified, DLC Listed | 8442K112 | 0000000 |
Wide Beam with Uplighting | |||||||||||||||
| D | 12'-25' | 24,000 | 177W | 120-277V AC | Neutral (4,000K) | 46" | 11 1/2" | 3 3/8" | Dimmable | 10% Uplighting | Steel | No | CSA Certified, CSA-US Certified, DLC Listed | 8442K129 | 000000 |

| For Style | Specifications Met | Each | |
| B | UL 924 | 8442K113 | 0000000 |

| For Style | Each | |
| B with Wide Beam Spread | 8442K114 | 000000 |

| For Style | Lg. | Wd. | Dp. | Material | Each | |
| D | 5 1/4" | 4 1/8" | 4 15/16" | Steel | 8442K136 | 000000 |

| For Style | Material | For Conduit Trade Size | Thread Type | Gender | Each | |
| D | Steel | 3/4 | NPT | Female | 8442K137 | 000000 |

Hook | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| For Style | Material | Style | Opening Wd. | Thick. | For Conduit Trade Size | Thread Type | Gender | Each | |
| D | Steel | J-Hook | 7/8" | 1/2" | 3/4 | NPT | Female | 8442K138 | 000000 |

Hook | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| For Style | Material | Lg. | Cap., lbs. | No. of Legs | Style | Opening Wd. | Thick. | Wire Rope Dia. | Each | |
| D | Steel | 10 ft. | 25 | 4 | J-Hook | 7/8" | 1/2" | 1/16" | 8442K139 | 000000 |
Corrosion-Resistant Washdown Bay Lights


Illuminate harsh, wet areas, even outside in extreme weather—these lights are often used on ship building ports. Rated NEMA 4X and UL marine listed, they’re sealed against heavy rain and washdowns, and they won’t corrode from salt water or cleaning chemicals. They’re also IP rated to stay sealed in dusty conditions. And with a durable glass lens, they’re rated IK08 for impact resistance. They’ll work in temperatures from -40° F to 145° F. Bright enough for environments that require high visibility, these lights have a cool appearance that highlights white and blue tones.
A quick-connect mount lets you wire these lights to an outlet box without having to hold them in place. First, wire the mount to your outlet box with a 3/4" conduit connector. Then twist the light into the mount to lock it in place.
These lights are DLC (DesignLight Consortium) listed, so they’ve been tested to confirm their energy efficiency. They’re also CE Marked to meet European safety standards.
Overall | Housing | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Lg. | Wd. | Ht. | For Ceiling Ht. | Brightness, lumens | Light Appearance | Wattage | Voltage | Material | Color | Mounting Hardware Included | Environmental Rating | Specifications Met | Each | |
Built-In LED | ||||||||||||||
| 18 11/16" | 15 15/16" | 5 1/2" | 12'-25' | 24,000 | Cool (5,000K) | 180W | 120-277V AC | Aluminum | Gray | Yes | IP66, IP67, NEMA 4X, IK08 | UL Marine Listed, DLC Listed, CE Marked | 8783N114 | 000000000 |


























