What is led bulb replacement for 20-watt mr 16 halogen bulb

I did use 20 watt halogens for all my exterior uplights. I now use these LED bulbs and am really satisfied. They actually put out more light than the halogens for 25% the power consumption. And the LED's generally last at least 3 years, while I seemed to be replacing the halogens about ever 6 months

what is the overall hight from the base ( not including the pins ) to the top

It's 1.575 inch, hope this helps.

Can these be used in a pool light housing?

Our MR16 LED bulbs are NOT waterproof, please make sure the bulbs won't touch the water, or it may cause serious damage to your light even FIRE. Bulb specification: Standard MR16 shape (Dia1.97*1.85 inch) with GU5.3 bulb base. Hope it helps. Mlambert Team

Can these be used inside a projector and or DJ lighting to replace halogens?

I placed mine inside lamps on track lighting and replaced halogens that used to create tremendous heat. With the leds there is nearly no heat. So, I'm sure you could put them inside a projector and DJ lights. In the absence of heat, they'll probably last 10xs longer.

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Description

✨ Light smarter, live brighter with Mlambert MR16 LEDs!

LONG LASTING GLOW - Over 30,000 hours of flicker-free, eye-friendly illumination means fewer replacements and more peace of mind.
EFFORTLESS UPGRADE - Standard MR16 GU5.3 base fits seamlessly into your existing fixtures—no hassle, just instant brilliance.
VERSATILE RELIABLE - Ideal for indoor/outdoor use—track, recessed, landscape lighting—and compatible with 12V transformers for flexible installation.
ENERGY SMART SPOTLIGHT - Consumes only 5W while delivering the brightness of a 50W halogen—cut costs without compromising light quality.
WARM AMBIANCE PROFESSIONAL VIBE - 2700K warm white light with CRI >80 creates a cozy yet vibrant atmosphere perfect for modern workspaces and stylish homes.

The Mlambert 12 Pack MR16 LED Bulbs offer a powerful 5W LED alternative to traditional 50W halogen bulbs, delivering 450 lumens of warm 2700K light with a 45° beam angle. Designed with a standard GU5.3 base, these bulbs provide easy installation and long-lasting performance with over 30,000 hours of flicker-free, eye-friendly illumination. Perfect for both indoor and outdoor settings, they combine energy efficiency, reliability, and a cozy ambiance to elevate any professional or home environment.

Specifications

Brand	Mlambert
Light Type	LED
Special Feature	Energy Efficient, Eye-Friendly, Flicker-Free, Instant On, Long Lasting
Wattage	5 watts
Bulb Shape Size	MR16
Bulb Base	GU5.3
Incandescent Equivalent Wattage	50 Watts
Specific Uses For Product	MR16 LED Bulbs, Not Dimmable, 5W, 50W Equivalent, 450 Lumens, 2700K Warm White, 12V, 45° Beam Angle, Track Lighting, Spotlight, Recessed Lighting ; Instant On, No Humming, No Flickering, No Buzzing; Standard MR16/GU5.3 Base
Light Color	Warm White
Voltage	12 Volts
Unit Count	12 Count
Color Temperature	2700 Kelvin
Number of Items	12
Brightness	450 Lumen
Shape	MR16
Material	Aluminum
Indoor/Outdoor Usage	Indoor, Outdoor
Power Source	AC/DC
Color Rendering Index	80
Beam Angle	45 Degrees
Power Consumption	5 Watts
Item Package Quantity	1
Light Source Type	LED
Light Source Wattage	5 Watts
Product Dimensions	1.97"W x 1.85"H
Control Method	Touch
Average Life	30000 Hours
White Brightness	450 Lumens
Efficiency	High
Manufacturer	Mlambert
Part Number	USTX-LED09-5.527-12
Item Weight	10.8 ounces
Item model number	MR16-5W5T006HW-16
Color	Warm White
Finish types	Natural
Included Components	12 Pack MR16 GU5.3 LED Bulbs Included
Special Features	Energy Efficient, Eye-Friendly, Flicker-Free, Instant On, Long Lasting
Light Direction	Adjustable
Batteries Required?	No
Wattage	5 Watts
Bulb Features	Not Dimmable

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