Does this fit the heat n glo fireplace model sl-750tv-d?

if your fireplace serial# is before 0021076242 ... then this will definitely fit. if your serial# is after ... then this will probably work just fine

Will this fit a vanguard model gvc50na?

I have no idea, but my guess is - probably not. Your best bet is to dig out your owner's manual or go to the Vanguard website - and look-up the part/part # thermocouple for your fireplace, and then cross-reference that to the Amazon website. Good luck.

Will this fit empire dvvk-3-fv innsbrook direct vent lp gas fireplace insert?

Without doing any research . . . I'm almost certain the answer is no. I've found that the interchangeability of these thermocouples is almost non-existent. Your best bet is to check your owner's manual for the part number (in the very back) and then cross-reference that part to Amazon or a similar after market supply source.

Is this a 87D thermocouple for a Cozi furnace?

The answer to this question is best received from the manufacturer.

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🔥 Upgrade your fireplace game with precision and power!

DIRECT VENT READY - Optimized for direct vent fireplaces ensuring clean, safe, and effective heating.
UNIVERSAL COMPATIBILITY - Seamlessly replaces Robertshaw 446-511 and fits SIT 820 NOVA gas valves with fine thread.
POWERFUL 27 K W HEAT OUTPUT - Delivers efficient warmth to elevate your living space instantly.
DURABLE BRUSHED METAL FINISH - Combines sleek aesthetics with long-lasting performance for modern interiors.
EASY WALL MOUNT INSTALLATION - Designed for hassle-free setup, so you’re back to cozy comfort faster.

The US Merchant Heatilator Heatnglo 27" Thermocouple is a high-performance replacement part designed for direct vent gas fireplaces. Compatible with Robertshaw 446-511 and some SIT 820 NOVA gas valves, it delivers 27 kW of heat output with a durable brushed metal finish. Lightweight and easy to install, this thermocouple ensures reliable ignition and efficient heating, making it an essential upgrade for maintaining your fireplace’s optimal performance.

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TrustScore 4.5 | 7,300+ reviews

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Excellent communication throughout the order process. Product is perfect.

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The MOLLE sheath is of exceptional quality. Very happy with my purchase.

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Brand	Fixitshop
Power Source	Gas Powered
Material	Metal
Finish Type	Brushed
Installation Type	Wall Mount
Heat Output	27 Kilowatts
Style	Classic
Color	Copper
Ventilation Type	Direct Vent
Model Name	27" Thermocouple
Shape	Rectangular
Warranty Type	Limited
Burner type	gas
UPC	045445923903
Manufacturer	Fixitshop Corp.
Part Number	446-511
Item Weight	1.44 ounces
Package Dimensions	5.35 x 3.98 x 0.51 inches
Item model number	446-511
Is Discontinued By Manufacturer	No
Finish	Brushed
Item Package Quantity	1
Batteries Included?	No
Batteries Required?	No

US Merchant Heatilator Heatnglo Direct Vent Fireplace 27" Thermocouple replaces Robertshaw 446-511

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