What country are these lamps made in?

If I recall, China. But it's been quite a while since I saw the box, so I will say that I believe that I am accurate to the best of my knowledge.

This is far infrared, what spectrum is it?

I believe that is a question for the manufacturer and or Amazon customer service. I don't recall that information on the box either? Google or Chrome Search App may have some data on your question if you ask and include the Wattage. I used these bulbs for the heat lamp in the chicken coop.

Are the lamps coated with silicone or something to prevent shattering?

no, the clear ones come in shatter shield. https://www.amazon.com/dp/B08WPGBTP1?ref=myi_title_dp it will be in stock 1-2 weeks.

Are these bulbs 6.5" long, or 9.1" long? The information in the listing shows contradictory data...

Just looking at my tape measure, and if I recall, the size of the bulb box and the bulb itself, 6.5 inches is the more accurate measurement. You can confirm that with Amazon Customer Service, as well.

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250 Watts R40 Red Heat Lamps Outdoor Bulbs for Pets Flood Light Bulb for Chickens Infrared Reflector 250W R40 Incandescent Medium E26 Base 2 Pack

250 Watts R40 Red Heat Lamps Outdoor Bulbs for Pets Flood Light Bulb for Chickens Infrared Reflector 250W R40 Incandescent Medium E26 Base 2 Pack

Product ID: 161450206

Details

Brand
BULBMASTER
Bulb Shape Size
R40
Light Type
Incandescent
Special Feature
Dimmable
Wattage
250 watts

⏳6000 hours long lifespan

🔥250W powerful heat output

🌡️Infrared radiant warmth

$71.37

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Description

🔥 Stay warm, stay ahead — the heat lamp your pets and spaces deserve!

BUILT TO LAST - Durable incandescent design with a 6000-hour lifespan reduces frequent replacements and hassle.
VERSATILE HEAT SOLUTION - Perfect for chicken coops, bathrooms, beauty salons, and food service environments.
ULTIMATE WARMTH FOR YOUR PETS - 250 Watts of consistent infrared heat keeps chicks, dogs, and cats cozy and thriving.
WEATHER RESISTANT RELIABILITY - Designed for indoor and outdoor use, ensuring dependable warmth rain or shine.
EASY INSTALLATION COMPATIBILITY - Standard E26 medium base fits most fixtures, with dimmable control for customized comfort.

The BULBMASTER 250W R40 Red Heat Lamp delivers powerful infrared warmth with a durable 6000-hour lifespan. Its versatile design suits everything from chicken coops to beauty salons, featuring a standard E26 base and weather-resistant build for reliable indoor/outdoor use.

Specifications

ASIN	B07VWL8D33
Accepted Voltage Frequency	100 to 120 Volts and 60 Hertz
Additional Features	Dimmable
Best Sellers Rank	#21,444 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #197 in Incandescent Bulbs
Brand Name	BULBMASTER
Bulb Base	E26 Medium
Bulb Diameter	4.92 Inches
Bulb Shape Size	R40
Color	White/Red
Color Rendering Index	80
Control Method	App
Controller Type	Push Button
Customer Reviews	4.5 4.5 out of 5 stars (2,741)
Incandescent Equivalent Wattage	250 Watts
Included Components	non
Indoor Outdoor Usage	Indoor
Item Dimensions W x H	1.03"W x 6.5"H
Item Type Name	Heat lamp
Light Color	Red
Light Source Operating Life	250 Days
Light Source Type	Incandescent
Light Source Wattage	250 Watts
Light Type	Incandescent
Manufacturer	BULBMASTER
Manufacturer Part Number	Heat Lamp
Manufacturer Warranty Description	30 days.
Material Type	Glass
Model Name	Heat Lamp
Model Number	Heat Lamp
Number of Items	1
Package Quantity	1
Power Consumption	250 Watts
Power Source	Corded Electric
Shape	Reflector(R)
Smart Home Compatibility	Not Smart Home Compatible
Specific Uses For Product	Heat Lamp
Style Name	250W/R40/RED/2PK
Theme	Heating
UPC	729798771502
Unit Count	1.0 Count
Voltage	120 Volts
Wattage	250 watts

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$71.37

Duties & taxes included

In stock

Sold byAmazon USADelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to USA.

Secure transaction

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TrustScore 4.5 | 7,300+ reviews

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