Would this flange work for a 6307 rohl allia fireclay sink? and would it fit other disposals or only the insinkerator?

This flange will work with the American Standard 1.25 hp from Costco. They have the very same mounting system as Insinkerator brand. I suspect any disposal made by Insinkerator will have the same mounting system and the flanges are likely standard. I took a chance on this one, and it fits the American Standard perfectly.

Will this work with a waste king l-8000 ez mount garbage disposal?

It can be used with all InSinkErator disposers, but can't guarantee it will work with a different brand.

Does anyone know if this flange will work with a Whitehaus WH3018 sink and a Insinkerator Pro Compact disposal?

I can not say for certain, but I would expect it will work. You did not say why you need the deep flange.I was unable to determine the thickness of your sink, but from the diagram I saw, it does not seem to be thick enough to need this flange. If the flange is too deep, you will need to get longer screws, as I did. See my review for details.

Where can I get an extra long screw with the right head shape to work with this product?

Hi, our mounting screws are custom and are 1-1/2" long. If you need assistance, please reach us at https://support.insinkerator.com/app/ask. Thank you!

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Description

🔧 Upgrade your kitchen’s core with the ultimate extended sink flange!

DURABILITY MEETS CONVENIENCE - Engineered to withstand daily kitchen demands while maintaining a spotless, easy-to-clean surface.
EXTENDED FIT FOR THICK SINKS - Seamlessly connects disposers to sinks up to 1-3/4 inches thick—no compromises on style or function.
TRUSTED AMERICAN CRAFTSMANSHIP - Backed by the #1 US disposer brand with a 5-year in-home service warranty for peace of mind.
PREMIUM POLISHED STAINLESS STEEL - Elevate your kitchen’s aesthetic with a sleek, durable finish that resists wear and adds elegance.
EFFORTLESS INSTALLATION COMPATIBILITY - Designed exclusively for InSinkErator disposers to ensure a perfect, hassle-free fit every time.

The InSinkErator Deep Sink 3.5 Extended Sink Flange is a polished stainless steel accessory engineered to connect InSinkErator disposers to thicker sinks ranging from 3/4 to 1-3/4 inches. Crafted in the USA by the leading brand in garbage disposals, it offers a premium finish, easy installation, and a 5-year in-home service warranty, making it the smart choice for modern kitchens demanding both style and durability.

Specifications

Brand	InSinkErator
Color	Polished Stainless Steel
Material	Stainless Steel
Size	3.5 Inch
Product Dimensions	40"D x 100"W x 50"H
Style	American
Installation Type	Undermount
Finish Type	Stainless Steel
Shape	Round
Drain Type	Grid
Item Weight	8 ounces
Product Care Instructions	Wipe with Dry Cloth
UPC	754262185493 050375004448 798256187285
Global Trade Identification Number	00050375004448
Manufacturer	InSinkErator
Part Number	FLG-SSLG
Item model number	FLG-SSLG
Is Discontinued By Manufacturer	No
Finish	Stainless Steel
Item Package Quantity	1
Batteries Included?	No
Batteries Required?	No
Warranty Description	5-Year "We Come To You" In-Home Service Warranty

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