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Last updated: May 2026 · By the Major Product Team
3-Bolt vs EZ Mount Garbage Disposals: What Importers Should Ask in Replacement RFQs
A replacement order goes wrong this way: the customer’s old disposer was 3-bolt, the new unit you shipped is EZ Mount, and the installer has to pull the upper ring out before the new disposer can mount. The disposer itself is fine. The mount family under the sink is what didn’t match.
Major makes both mount families. We make the adapters that bridge them. We make custom flanges when a standard one won’t seat. We don’t pick the mount for the importer. The installed base under the homeowner’s sink picks it for us.
What Each Mount Actually Is
A 3-bolt mount is a stainless-steel bracket assembly. Three bolts hold the disposer to an upper mounting ring that sits in the sink hole. The splash guard mounts inside the disposer body, not removable without taking the unit off the ring. More parts, heavier hardware, longer install.
An EZ Mount is a plastic twist-and-lock ring. The disposer rotates onto the ring and locks in place. The splash guard slides out from the top without tools. Fewer parts, faster install.
Both fit a standard 114mm sink hole. Both use a standard 4cm flange height. Both run the same motor architectures across the line. Mount choice doesn’t change grinding performance.
The differences are install time, material (plastic ring or stainless bracket), and — for replacement orders specifically — which mount is already under the homeowner’s sink. Some customers want stainless because they don’t trust plastic long-term. Some want EZ because the contractor’s install bill is shorter. Both reasons land in our inbox every quarter.
In a same-mount replacement, the upper ring stays in place. The installer unbolts the old disposer (or twist-unlocks it), takes it off, mounts the new unit on the same ring, re-tightens. Half an hour, no plumber’s putty work. In a cross-mount replacement, the entire upper ring comes out. Snap ring off, bracket plate off, old putty scraped clean, new ring fitted with fresh putty, sealed and torqued. That’s the 90-minute job.
Where Mount Sits in Our 20 SKUs
The entry-tier D series — D100, D200, D300, D400 — defaults to EZ Mount.
The premium positions ship 3-bolt: D500, X3, the full M series BLDC variable-frequency line, and the Z series. Most of our 1/2 HP to 1 HP options sit in here.
Five SKUs ship in either configuration: D600, D700, X1, X2, and X4. The customer picks at PO.
When a customer wants D100 through D400 in 3-bolt instead of the default EZ, we build it. Same SKU family, different mount hardware at assembly. The disposer body doesn’t change; the bracket does.
The Israeli Order in May 2026
Long-term Israeli customer sent an order this past May. One line in the PO said a unit needed to install on a thicker sink than standard. He’d tried the standard 4cm flange on a showroom test unit and it wouldn’t seat — the sink wall was thicker than the flange could clear. Around 5.5cm at the drain hole.
Flanges aren’t bought-in components for us. We make them. International standard is 114mm diameter, 4cm height. We cut him a custom 6cm height version. Same diameter, longer column. Disposer threaded down through it the same way as on a standard flange. Customer installed and stayed within his original delivery window.
Sink thickness was the friction on this order. Mount type fit either way. The disposer threads the same onto either bracket; the flange is what has to clear the sink wall.
Farmhouse sinks, fireclay, some thicker composite sinks — they run past what the standard 4cm flange handles. When an importer sells into renovation work, sink thickness varies by what’s installed in those kitchens. The disposer SKU stays the same. The flange SKU has to be configurable.
What the Replacement RFQ Should Cover
Mount family of the installed base. If the dealer’s customers mostly have 3-bolt under the sink, ship 3-bolt. If they’re mostly EZ, ship EZ. Mount-family-match is the short install. Mount-family-mismatch is the flange-removal install. The dealer pays in install hours either way.
Sink thickness in the channel matters next. The 4cm standard flange handles most kitchen sinks. For farmhouse and thick-rim renovation channels, build extended-flange options into the SKU spec from the start. Don’t leave it as a callback after the units land in the warehouse.
For dealers whose installed base is mixed or unknown, ship the disposer with a mount adapter in the box. The adapter lets a 3-bolt unit lock into an existing EZ Mount, or an EZ unit lock into an existing 3-bolt ring. Old flange stays, old putty stays, old ring stays. The conversion happens in the cabinet, not at the sink. Adds a few dollars to the unit cost. Cheaper than the flange-removal labor on the other side.
Material preference belongs in the RFQ too. Stainless or plastic. Both work.
What We Do and What We Don’t
Disposer, mount in both families, adapter, flange in standard 114mm × 4cm and in custom heights — these are all made at our factory. What we don’t do is visit kitchens or survey the homeowner’s installed base. The information that decides the replacement SKU comes through the importer’s RFQ, before we ship.
A replacement RFQ that only asks about HP and motor architecture ships a disposer that runs but doesn’t fit the existing setup.
For air switch packing and certification scope, the replacement-channel RFQ asks different questions than the new-construction RFQ.
Send the installed mount family and sink thickness. We match SKU and flange before quote — not after PO.
Send the target market, installed mount family, sink thickness requirement and preferred disposer configuration. We can review 3-bolt, EZ Mount, adapter and custom flange options for your replacement program.
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Send target market, horsepower, motor type, voltage, mount system, power cord, plug type, air switch needs, and certification requirements before the quote is finalized.
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