--- product_id: 664066 title: "INSINKERATOR Kitchen Sink Flange for INSINKERATOR Garbage Disposal, FLG-MTBLK, Matte Black" price: "£38.58" currency: GBP in_stock: true reviews_count: 13 url: https://www.desertcart.co.uk/products/664066-insinkerator-kitchen-sink-flange-for-insinkerator-garbage-disposal-flg-mtblk store_origin: GB region: United Kingdom --- # DIY-friendly installation Matte Black stylish finish 4.5-inch diameter flange INSINKERATOR Kitchen Sink Flange for INSINKERATOR Garbage Disposal, FLG-MTBLK, Matte Black **Price:** £38.58 **Availability:** ✅ In Stock ## Summary > 🖤 Upgrade your kitchen sink game with sleek durability and style! ## Quick Answers - **What is this?** INSINKERATOR Kitchen Sink Flange for INSINKERATOR Garbage Disposal, FLG-MTBLK, Matte Black - **How much does it cost?** £38.58 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.co.uk](https://www.desertcart.co.uk/products/664066-insinkerator-kitchen-sink-flange-for-insinkerator-garbage-disposal-flg-mtblk) ## Best For - Customers looking for quality international products ## Why This Product - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Farmhouse Sink Ready:** Compatible with extended flanges for thicker sinks, ensuring no compromise on style or function. - • **Customizable Style Match:** Coordinate with matching sink stoppers and push-button switches for a cohesive kitchen vibe. - • **Sleek Matte Black Finish:** Elevate your kitchen aesthetics with a modern, fingerprint-resistant matte black look. - • **Precision Fit, Zero Hassle:** Designed to perfectly fit all INSINKERATOR disposals for seamless installation. - • **Durable Stainless Steel Build:** Engineered to withstand daily kitchen wear and tear with lasting corrosion resistance. ## Overview The INSINKERATOR FLG-MTBLK Kitchen Sink Flange is a 4.5-inch stainless steel flange finished in matte black, designed for easy DIY installation with all INSINKERATOR garbage disposals. It offers a durable, corrosion-resistant build that complements modern kitchen decor, with optional coordinating accessories and compatibility with extended flanges for thicker sinks like farmhouse styles. ## Description Product Description Add a touch of style to your kitchen sink in a unique finish that works best for your kitchen decor with this INSINKERATOR kitchen sink flange for INSINKERATOR garbage disposals. Compatible with any INSINKERATOR-manufactured sink disposal, this decorative sink flange in a matte black finish is designed for DIY installation*. The Matte Black finish is a deep, flat black color to complement your matte black kitchen faucet. Available in a variety of finish options, this kitchen sink garbage disposal flange suits a wide range of popular kitchen sink finishes, and coordinating colors for your drain stopper and sink-top air switch garbage disposal button also are available. INSINKERATOR. KITCHEN BETTER. *Before removal of old garbage disposer, be sure to measure either the existing mounting to assembly or the sink thickness to determine if an extended garbage disposal flange is needed. From the Manufacturer Add unique style to your kitchen with our popular designer colors. For use on all InSinkErator manufactured disposers. Please note that use of abrasive cleaning solutions may harm this product's finish. Review: If you have a Farmhouse sink you need this and possibly more - If you are trying to install an Insinkerator disposal unit (or even another brand) and have a Farmhouse sink you’ll need this Deep Sink Flange. The standard flange is 1-1/2 inches deep and it does not leave enough room for the thickness of a farmhouse sink. Here is the rest of the story... I go to my daughter's house to install a new dishwasher and end up installing a new disposal unit as well. She has a farmhouse sink and the plumber (or the person impersonating a plumber) installed the disposal on a 1” thick farmhouse sink with the standard flange. He did not use the backup flange and just had the screws directly contacting her expensive sink so the whole disposal unit was putting pressure on three screws. It was leaking badly, stinking badly and damaged the cabinet. [see graphic with screw indents in the sink] If your sink is thicker than ¾ of an inch you need this Deep Sink Flange but if your sink is between ¾” and 1” insinkerator does not have the full solution. There are two screw lengths they provide with the standard flange that comes with the new disposal unit which are the H1 which is 1-1/2 inches and H2 which is 1-1/8 inches. Now if you install a 1” sink in the Deep Sink Flange which is 3-1/2 inches deep that means you have about 2-1/2 more inches of flange. Of course, there is the snap ring which does take up some depth but the problem is that Insinkerator does not have screws long enough for a 1” sink and definitely not a ¾ inch sink. My solution was to add a second [see graphic] backup flange (kind of a kludge) and if it does NOT hold, I will obtain some longer stainless-steel screws. They should be called Insinkerator H3 screws and would be a 5/16-18 [18 threads per inch] and 1-3/4 inches long and the end should be flat so as to have better pressure on the back flange. Last comment – yes at $50 this deep flange is a rip-off and if it came with the 1-3/4 screws it would still be a rip-off but at least you could install your disposal unit. Review: Accurate size! - Just what I needed very accurate size! ## Features - INSINKERATOR FLG-MTBLK KITCHEN SINK FLANGE: One 4.5-in by 1.75-in INSINKERATOR flange in Matte Black finish; baffle (sold separately) not included - DURABLE DESIGN: INSINKERATOR garbage disposal sink flange made of durable stainless steel to handle common kitchen cleanups - STYLISH AND COMPLEMENTARY: Decorative garbage disposal flange available in a variety of finishes to match your kitchen decor, adding an elegant touch to the kitchen sink; coordinating sink stopper and sink-top push button switch also available - DESIGNED FOR COMPATIBILITY AND DIY INSTALL: Compatible with any INSINKERATOR-manufactured sink disposal; INSINKERATOR extended sink flange for thicker kitchen sinks, like a farmhouse sink, sold separately - PRESERVING ELEGANCE: Abrasive cleaning solutions not recommended to avoid possibility of harming finish on INSINKERATOR kitchen sink flange ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B002I631H8 | | Batteries Included? | No | | Batteries Required? | No | | Best Sellers Rank | #5,745 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #8 in Garbage Disposal Parts | | Color | Matte Black | | Customer Reviews | 4.3 4.3 out of 5 stars (4,207) | | Date First Available | April 22, 2010 | | Finish | Matte Black | | Is Discontinued By Manufacturer | No | | Item Package Quantity | 1 | | Item Weight | 3.52 ounces | | Item model number | FLG-MTBLK | | Manufacturer | InSinkErator | | Number Of Pieces | 1 | | Part Number | FLG-MTBLK | | Pattern | Sink | | Product Dimensions | 1.75 x 6 x 8 inches | | Size | Sink Flange | | Style | Decorative Accessory | ## Images ![INSINKERATOR Kitchen Sink Flange for INSINKERATOR Garbage Disposal, FLG-MTBLK, Matte Black - Image 1](https://m.media-amazon.com/images/I/713mLTjRVDL.jpg) ![INSINKERATOR Kitchen Sink Flange for INSINKERATOR Garbage Disposal, FLG-MTBLK, Matte Black - Image 2](https://m.media-amazon.com/images/I/51tEiVy2m2S.jpg) ![INSINKERATOR Kitchen Sink Flange for INSINKERATOR Garbage Disposal, FLG-MTBLK, Matte Black - Image 3](https://m.media-amazon.com/images/I/51vVt-LLC8S.jpg) ![INSINKERATOR Kitchen Sink Flange for INSINKERATOR Garbage Disposal, FLG-MTBLK, Matte Black - Image 4](https://m.media-amazon.com/images/I/51+Fx5lriHL.jpg) ## Available Options This product comes in different **Color** options. ## Questions & Answers **Q: Does this product just snap in or does it require installation?** A: requires installation. Plumbers puddy under the rim and a locking ring from your current disposal should be what you need.Should be an insinkerator brand disposal to insure proper fit. **Q: can this be used with product - InSinkErator QCB-AM Anti-Microbial Quiet Collar Sink Baffle, Black** A: The White version worked great so I assume the Black version is the same size / fit. **Q: Mine doesn't hold water. How can I get new rubber gaskets or something. Its like the plug doesn't fit tightly and yes it is a insinkerator plug.** A: Sometimes if the plug has been used quite a bit it will shrink a little and the water leaks. I ordered a new plug and it solved my issue. **Q: Will this fit a Badger garbage disposal?** A: It didn’t fit mine ## Customer Reviews ### ⭐⭐⭐⭐⭐ If you have a Farmhouse sink you need this and possibly more *by M***. on April 11, 2024* If you are trying to install an Insinkerator disposal unit (or even another brand) and have a Farmhouse sink you’ll need this Deep Sink Flange. The standard flange is 1-1/2 inches deep and it does not leave enough room for the thickness of a farmhouse sink. Here is the rest of the story... I go to my daughter's house to install a new dishwasher and end up installing a new disposal unit as well. She has a farmhouse sink and the plumber (or the person impersonating a plumber) installed the disposal on a 1” thick farmhouse sink with the standard flange. He did not use the backup flange and just had the screws directly contacting her expensive sink so the whole disposal unit was putting pressure on three screws. It was leaking badly, stinking badly and damaged the cabinet. [see graphic with screw indents in the sink] If your sink is thicker than ¾ of an inch you need this Deep Sink Flange but if your sink is between ¾” and 1” insinkerator does not have the full solution. There are two screw lengths they provide with the standard flange that comes with the new disposal unit which are the H1 which is 1-1/2 inches and H2 which is 1-1/8 inches. Now if you install a 1” sink in the Deep Sink Flange which is 3-1/2 inches deep that means you have about 2-1/2 more inches of flange. Of course, there is the snap ring which does take up some depth but the problem is that Insinkerator does not have screws long enough for a 1” sink and definitely not a ¾ inch sink. My solution was to add a second [see graphic] backup flange (kind of a kludge) and if it does NOT hold, I will obtain some longer stainless-steel screws. They should be called Insinkerator H3 screws and would be a 5/16-18 [18 threads per inch] and 1-3/4 inches long and the end should be flat so as to have better pressure on the back flange. Last comment – yes at $50 this deep flange is a rip-off and if it came with the 1-3/4 screws it would still be a rip-off but at least you could install your disposal unit. ### ⭐⭐⭐⭐⭐ Accurate size! *by M***A on May 19, 2026* Just what I needed very accurate size! ### ⭐⭐⭐⭐⭐ Simple installation in the drain. Good Functionality as needed! *by P***R on April 14, 2026* Simple installation in the drain. Good Functionality as needed! ## Frequently Bought Together - Insinkerator FLG-MTBLK, Sink Flange, Matte Black - Insinkerator STP-MTBLK, Matte Black Garbage Disposal Sink Stopper Fits Standard Kitchen Drain Size of 3 1/2 Inch Diameter - InSinkErator STC-MTBLK Push SinkTop Switch Button, Matte Black --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.co.uk/products/664066-insinkerator-kitchen-sink-flange-for-insinkerator-garbage-disposal-flg-mtblk](https://www.desertcart.co.uk/products/664066-insinkerator-kitchen-sink-flange-for-insinkerator-garbage-disposal-flg-mtblk) --- *Product available on Desertcart United Kingdom* *Store origin: GB* *Last updated: 2026-05-28*