I don’t believe so. It has no labeling on the box or bulb. I would think not

250R40/1 250-Watt, Incandescent R40 Reflector, Clear Head Lamp, Heat Flood Lamp Light Bulb, E26 Standard Medium Screw Base, 120V, 6,000 Hour Rated (Pack of 2-Clear-Heat Lamps)

250R40/1 250-Watt, Incandescent R40 Reflector, Clear Head Lamp, Heat Flood Lamp Light Bulb, E26 Standard Medium Screw Base, 120V, 6,000 Hour Rated (Pack of 2-Clear-Heat Lamps)

Q: How long does it take to heat up and generate heat? Looking to put on motion light for an open dog kennel.

It heats up right away. But we use it in our garage where we have a dog house for her. I don't know how well it would work in an open space.

Q: What is the frequency emitted? Is this actual infrared or just red glass?

I didn’t see a uv frequency chart for this bulb, but you may be able to compare it to another light with the same lens color. I would imagine it’s somewhere between 625 and 675. I hope that helps.

Q: Are these dimmable if I add a dimmer switch to my dome fixture?

I do not know since the place where they are in use does not have a dimmer switch. I can not find any place where it's stated that they are dimmable.

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Product ID: 207446011

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Details

Brand
KOR
Light Type
Incandescent
Special Feature
Long Lasting
Wattage
250 watts
Bulb Shape Size
R40

⏳2,000 hours long-lasting warmth

💡E26 standard medium screw base

🔥250W intense heat output

Frequently Bought Together

250R40/1 250-Watt, Incandescent R40 Reflector, Clear Head Lamp, Heat Flood Lamp Light Bulb, E26 Standard Medium Screw Base, 120V, 6,000 Hour Rated (Pack of 2-Clear-Heat Lamps)

Woods Clamp Lamp Light with Aluminum Reflector; 150W; UL Listed; 6- Foot Cord

Description

🔥 Turn up the heat and never miss a cozy moment!

BUILT TO LAST - 2,000 hours of reliable heat means fewer replacements and more peace of mind.
PET APPROVED HEAT - Perfect for chickens, reptiles, puppies, and more—create a cozy sanctuary for your furry and scaly friends.
DOUBLE THE COZY POWER - Pack of 2 bulbs to keep your space and pets perfectly warm—no more chilly moments!
INSTANT HEAT INSTANT COMFORT - Infrared technology delivers fast-acting warmth the moment you flip the switch.
VERSATILE WARMTH FOR EVERY NEED - Ideal for food warmers, animal habitats, spa therapy, and even your bathroom post-shower luxury.

The KOR 250R40/1 is a pack of two 250-watt incandescent R40 reflector heat lamps with a clear finish and E26 medium screw base, designed for indoor use at 120V. Each bulb delivers fast, infrared warmth rated for 2,000 hours, perfect for warming food, animal habitats, and personal comfort spaces. Durable and versatile, these bulbs combine efficient heat output with long-lasting performance to keep your environment cozy and inviting.

Specifications

Brand	KOR
Light Type	Incandescent
Special Feature	Long Lasting
Wattage	250 watts
Bulb Shape Size	R40
Bulb Base	E26
Incandescent Equivalent Wattage	250 Watts
Specific Uses For Product	Lamp
Light Color	clear
Voltage	120 Volts
Unit Count	2.0 Count
Number of Items	2
Shape	Reflector(R)
Material	copper
Connectivity Technology	Infrared
Indoor/Outdoor Usage	Indoor
Controller Type	Push Button
Power Source	Corded Electric
Color Rendering Index	80
Power Consumption	250 Watts
Item Package Quantity	2
Light Source Type	Incandescent
Item Weight	11.36 ounces
Light Source Wattage	250 Watts
Product Dimensions	5"W x 6.5"H
Accepted voltage frequency	100 to 120 Volts and 60 Hertz
Control Method	App
White Brightness	100 Lumens
Efficiency	Low
Manufacturer	KOR
UPC	817300022546
Part Number	K22546
Item Weight	11.4 ounces
Item model number	K22546
Style	Pack of 2-CLEAR-Heat Lamps
Color	Clear
Finish types	Clear
Special Features	Long Lasting
Batteries Included?	No
Batteries Required?	No
Wattage	250 Watts

Have a Question? See What Others Asked

How long does it take to heat up and generate heat? Looking to put on motion light for an open dog kennel.

What is the frequency emitted? Is this actual infrared or just red glass?

UL listed?

Are these dimmable if I add a dimmer switch to my dome fixture?

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