A Color-Matched Disposal Flange Built for Black Quartz Sinks
The Karran QDFBL is a 3-1/2 inch disposal flange designed to couple a black quartz or acrylic sink's drain opening to a garbage disposal mount. Where a standard stainless or chrome fitting would break the look of a dark bowl, this flange carries the same Black finish as Karran's quartz line so the drain component disappears into the sink rather than standing out against it.
Key Features
• Color-matched Black finish coordinates with Karran's black quartz and acrylic sink bowls for a seamless look at the drain.
• 3-1/2 inch opening fits the standard kitchen drain size used across Karran's quartz and acrylic lines.
• Disposal-specific design replaces a basket strainer at the drain opening and connects the bowl to a garbage disposal mount.
• Published by Karran for quartz and acrylic sinks, keeping the finish pairing within the maker's stated compatibility.
Where This Fitting Belongs in the Kitchen
A disposal flange serves a single, specific role: it takes the place of a basket strainer at a drain opening that routes through a garbage disposal. If the sink has two bowls, the disposal flange goes on the disposal side while the other opening gets a basket strainer. For a single-bowl setup running to a disposal, this fitting handles the entire drain connection at the bowl. Because the flange couples to the disposal mount below rather than trapping debris, it is not interchangeable with a basket strainer and should not be installed on a drain that does not feed a disposal.
Finish, Fit, and What Ships in the Box
Karran publishes the QDF color-matched flange line for its quartz and acrylic sink bowls, and the QDFBL is the Black version of that line. The finish coordinates directly with Black quartz models such as bowls carrying the BL color code. Because color match is stated at the brand and material level, pairing this fitting with a sink outside Karran's quartz and acrylic range may not yield a true match. This is a standalone drain component and does not include a disposal unit, mounting hardware for the disposal itself, or any additional drain assembly parts beyond the flange.
The Right Buyer for This Component
Cabinet shops and countertop fabricators building out a Karran black quartz kitchen will find this flange the straightforward way to close out a disposal-drained sink without mismatching the drain to the bowl. Homeowners replacing a worn or wrong-finish fitting at a disposal-connected black quartz sink get the same benefit without a custom order. Designers specifying a full hardware package for a dark kitchen suite can call out the QDFBL alongside the sink model to guarantee the drain fitting is part of the color story from the start.
Frequently Asked Questions
Can I use this flange on a non-Karran black sink?
Karran publishes this fitting for its quartz and acrylic lines, so the color match and stated compatibility are within that product family. Whether the opening size fits another brand's sink depends on that sink's drain opening — the flange is sized for a 3-1/2 inch opening, which is standard for kitchen sinks, but a true finish match outside the Karran line is not guaranteed.
Does this flange work with any brand of garbage disposal?
The QDFBL connects the sink bowl to a disposal mount at the drain opening. Compatibility with a specific disposal brand depends on that disposal's mounting system. The flange itself handles the bowl-side connection; the disposal's own mounting hardware and mounting assembly govern the disposal-side fit.
Is a basket strainer included, or do I need to order one separately?
A disposal flange replaces a basket strainer — the two are not used together at the same drain opening. If the sink has a second bowl that does not connect to the disposal, a separate basket strainer is needed for that opening and must be ordered individually.
If my Karran sink came with basket strainers in a -PK1 pack, do I still need this?
Yes, if you are routing through a disposal. The basket strainers in a -PK1 pack are for non-disposal drain connections. The disposal-side opening needs this flange instead; swap it in at that bowl and keep the basket strainer for any remaining standard drain opening.
The Right Finish at Every Detail
A black quartz sink draws the eye — the drain fitting should hold the look, not undercut it. The QDFBL closes that gap so the disposal connection finishes as intentionally as the rest of the installation.
