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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INSINKERATOR Extended Sink Flange for INSINKERATOR Garbage Disposal, FLG-SSLG, Stainless Steel

Product ID: 6149738

Details

Brand
InSinkErator
Color
Polished Steel
Material
Stainless
Product Dimensions
40"D x 100"W x
Size
3.5 Inch

✨Polished stainless steel finish

🛠️Fits sinks 0.75-1.75 in thick

🇺🇸Genuine InSinkErator, USA-made quality

₨48075

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Description

🔧 Upgrade your sink game with the ultimate extended flange—because your thick sink deserves the best!

EXTENDED FIT FOR THICK SINKS - Seamlessly connects disposers to sinks up to 1-3/4 inches thick—perfect for premium materials like fireclay and solid surface.
SLEEK POLISHED STAINLESS STEEL - Elevate your kitchen’s aesthetic with a corrosion-resistant, mirror-like finish that resists wear and tear.
TRUSTED AMERICAN CRAFTSMANSHIP - Backed by InSinkErator’s legacy as America’s #1 disposer brand, ensuring durability and flawless compatibility.
5 YEAR IN HOME SERVICE WARRANTY - Confidence guaranteed with a premium warranty that brings expert support right to your doorstep.
EFFORTLESS INSTALLATION MAINTENANCE - Designed for a perfect fit and easy wipe-clean care, so your kitchen upgrade is hassle-free and long-lasting.

The InSinkErator Deep Sink 3.5 Extended Sink Flange is a polished stainless steel accessory engineered to connect InSinkErator disposers to sinks ranging from 3/4 inch to 1-3/4 inches thick. Designed for thicker, premium sink materials like fireclay and solid surface, it offers a sleek finish, easy installation, and is backed by a 5-year in-home service warranty from America’s leading disposer brand.

Specifications

ASIN	B00084W5O2
Best Sellers Rank	#7,426 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #8 in Faucet Flanges
Color	Polished Stainless Steel
Customer Reviews	4.3 4.3 out of 5 stars (4,292)
Date First Available	June 22, 2005
Finish	Polished Stainless Steel
Installation Method	Undermount
Item Package Quantity	1
Item Weight	4.2 ounces
Item model number	FLG-SSLG
Manufacturer	InSinkErator
Material	stainless steel
Part Number	FLG-SSLG
Shape	Round
Size	3.5 Inch
Style	American
Warranty Description	5-Year "We Come To You" In-Home Service Warranty

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₨48075

Duties & taxes included

In stock

Sold byAmazon Sri LankaDelivered 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 Sri Lanka.

Secure transaction

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TrustScore 4.5 | 7,300+ reviews

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4 days ago

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