The most popular under sink bin in Australian kitchens is a 30–40L twin pull-out designed for a 400mm cabinet. Singles run 20–35L for 300mm cabinets; large twins and triples reach 50–70L in 600mm cabinets. Always measure cabinet width, internal depth and S-bend clearance before buying.
|
Kitchen Type |
Best Under Sink Bin |
Cabinet Width |
|
Apartment / 1–2 people |
20L single pull-out |
300mm |
|
Small Australian family / 2–4 people |
30L twin pull-out |
400mm |
|
Large family / 4+ people |
40L+ double pull-out |
450–600mm |
|
Recycling + FOGO setup |
Dual or triple compartment |
600mm |
|
Entertaining / cook-heavy |
60–70L soft-close twin |
600mm |
Browse the full range of under sink bins systems built for Australian cabinet sizes.
Introduction
For most Australian kitchens, the right under sink bin is a 30–40L twin pull-out fitted to a 400mm cabinet — the size that handles a household's daily waste plus recycling without dominating cabinet space.
Who needs what: Singles and couples in apartments do well with a 20L single. Australian families of three to five need a 30–40L twin. Larger households running FOGO separation should go straight to a 50–70L double or triple in a 600mm cabinet.
Why measurement matters: Litres tell you only half the story. Cabinet width, internal depth and S-bend clearance dictate whether a bin will actually fit. Five minutes with a tape measure prevents the most common return reason we see in our industry — buying on litres alone.
This guide walks you through choosing the right under sink rubbish bin or underbench bin by litres, cabinet width, plumbing fit and recycling needs — based on the configurations we see daily in real Australian homes.
Why Under Sink Bins Are So Popular in Australian Kitchens
Modern Australian kitchens are built around clean lines, hidden storage and efficient use of space. That's why under sink rubbish bins and concealed kitchen bin systems have become one of the most popular kitchen storage upgrades across Australian homes.
An underbench bin keeps waste concealed inside cabinetry while making disposal quick during cooking and cleaning. We see them deliver the biggest value in:
- Small kitchens and apartment kitchens
- Modern handleless Australian kitchens where visible bins ruin the design line
- Family kitchens running recycling and FOGO separation
- Open-plan homes where freestanding bins clutter the visible space
- Renovations and new builds with integrated cabinetry
Because the bin sits inside the cabinet, you reclaim floor space and create a more streamlined layout. Australian councils increasingly run three-stream collections — general waste, recycling, and FOGO (Food Organics and Garden Organics) — which has driven the shift to twin and triple slide-out rubbish bin systems in Australian cabinetry.
What Size Under Sink Bin Do You Really Need?
The right under sink bin size depends on three things: household size, cabinet width, and whether you separate recycling and food scraps.
|
Household |
Cabinet Width |
Recommended Bin |
Capacity |
|
1–2 people |
300mm |
Single pull-out |
20–28L |
|
2–4 people |
400mm |
Twin pull-out |
30–40L |
|
3–5 people |
450mm |
Twin pull-out |
35–45L |
|
4–6+ people |
600mm |
Twin or triple |
50–70L |
General rules from our fit-out experience:
- Smaller households suit compact 15–20L single pull-outs
- Most Australian family kitchens work best with 30–40L twins
- Households separating recycling and FOGO almost always benefit from a double pull-out
If you cook regularly, entertain often or have kids, size up rather than down. Across our installation data from Australian kitchens, customers who size down to save space almost always wish they'd gone larger within six months.
"According to our installation data across Australian homes, around 70% of kitchens we fit out have a 400mm sink cabinet — which is exactly why the 30L twin pull-out is our default recommendation for most family kitchens. It disappears into the cabinet but doesn't make you take the rubbish out every night." — Kitchen Organisers Product Team
Common Cabinet Sizes in Australia
Australian kitchen cabinetry follows standard widths, which determine exactly which under sink bin will fit. Here's the breakdown of common cabinet sizes used in Australian kitchens and the bins they accommodate.
|
Cabinet Width |
Common Use |
Best Bin |
Bin Capacity |
|
300mm |
Compact kitchens, apartments, laundries |
Single slim pull-out |
20–28L |
|
400mm |
Most standard Australian kitchens |
Twin pull-out |
30–40L |
|
450mm |
Medium-to-large family kitchens |
Twin pull-out |
35–45L |
|
600mm |
Premium renovations, large families |
Triple or large twin |
50–70L |
|
800mm |
Corner cabinets, large island builds |
Multiple bins or oversized triple |
70–100L |
400mm is by far the most common sink cabinet width in Australian homes — found in roughly 70% of the kitchens we fit out. 600mm is rising fast in new builds and renovations because it accommodates triple-compartment FOGO + recycling + general waste systems in one concealed unit.
When searching for a 400mm cabinet bin, 450mm kitchen bin or 600mm pull out bin, always confirm the internal cabinet width — not the door width — because doors are typically narrower than the cabinet opening.
Looking for the right size? Explore our under sink bins filtered by cabinet width — 300mm, 400mm, 450mm and 600mm systems built for Australian cabinetry.
Best Under Sink Bin Sizes by Cabinet Width
Cabinet width is the single biggest factor in choosing the right under sink bin. Here are our top picks by Australian standard cabinet size.
· Best for 300mm Cabinets — 20L Single Pull-Out
A 20L single pull-out is the right call for compact Australian kitchens, apartments and laundry cabinets. Look for low-profile models under 460mm tall so they clear plumbing. These suit singles, couples and households with low daily waste volume.
Best fit: apartment kitchens, narrow galley kitchens, laundry rooms
· Best for 400mm Cabinets — 30L Twin Pull-Out
The 30L twin pull-out (2 × 15L compartments) is the most popular built-in kitchen bin in Australia, fitting the most common cabinet size in the country. Use one compartment for general waste, the other for recycling or FOGO. Soft-close runners and a 25kg load rating are standard at this size.
Best fit: the default for 70% of Australian family kitchens
🛒 Looking for a 30L twin pull-out for a 400mm cabinet? Explore our range of soft close bin systems designed for Australian kitchens.
· Best for 450mm Cabinets — 40L Twin Pull-Out
A 40L twin pull-out (2 × 20L) is the sweet spot for Australian families of four to five who cook most nights. The extra 10L over a 30L bin meaningfully reduces emptying frequency without changing cabinet feel.
Best fit: medium-to-large families, cook-heavy households
· Best for 600mm Cabinets — 60–70L Twin or Triple Recycling System
For 600mm cabinets, you can fit a 70L twin (2 × 35L) or a triple-compartment recycling system that separates general waste, recycling and FOGO in one concealed unit. These are the gold standard for new builds and full kitchen renovations across Australia.
Best fit: large families, entertainers, three-stream recyclers
Upgrading to a 600mm system? Browse our double pull out bins and triple-compartment recycling units built for Australian three-stream waste setups.
Is a 20L Under Sink Bin Big Enough?
A 20L under sink bin holds roughly four to five days of waste for a single person or couple. It suits:
- Singles and couples
- Apartment kitchens with tight 300mm cabinets
- Minimal-waste or zero-waste households
- Australian kitchens where plumbing eats most of the under-sink space
A 20L pull-out gives enough daily capacity without dominating cabinet space and clears standard P-trap and S-bend plumbing easily.
That said, larger families will fill a 20L bin within 24 hours, especially once food scraps are included. If you cook frequently or generate packaging waste, a 30L or 40L underbench bin is far more practical.
20L vs 30L vs 40L Under Sink Bins: Direct Comparison
|
Feature |
20L |
30L |
40L |
|
Best household size |
1–2 |
2–4 |
4–6 |
|
Cabinet width |
300mm |
400mm |
400–450mm |
|
Days between empties |
3–5 |
2–3 |
2–3 |
|
Configuration |
Usually single |
Twin (2 × 15L) |
Twin (2 × 20L) |
|
Price range (AUD) |
$80–$130 |
$150–$220 |
$180–$280 |
|
Best for |
Apartments, singles |
Most Australian family kitchens |
Cook-heavy households |
Choose 20L if you live alone or as a couple with limited cabinet space. Choose 30L if you're a typical 2–4 person Australian household — this is the default for a reason. Choose 40L if you cook from scratch most nights or generate bulky packaging waste.
People also ask: Is a 40L bin too big for a 400mm cabinet? No — a 40L twin (2 × 20L) typically fits a 400mm cabinet, provided plumbing clearance allows. Tight S-bends may push you to a 30L low-profile in the same width.
Single vs Double Under Sink Bins: Which Is Right?
|
Feature |
Single Pull-Out |
Double Pull-Out |
|
Typical capacity |
20–35L |
30–70L (2 compartments) |
|
Min. cabinet width |
300mm |
400mm |
|
Waste streams handled |
General only |
General + recycling or FOGO |
|
Price range (AUD) |
$80–$150 |
$150–$280 |
|
Best for |
Singles, couples, secondary bins |
Most Australian family kitchens |
|
Installation difficulty |
Easiest |
Easy (still DIY) |
|
Long-term flexibility |
Limited |
High |
A single pull-out is simpler, more affordable and fits compact cabinets — ideal if you already separate recycling elsewhere.
A double underbench bin gives you two compartments for general waste plus recycling, or general waste plus FOGO. With most Australian councils now running three-stream collections, double pull-out kitchen bins have become the standard for new and renovated Australian kitchens.
Our take: If your cabinet is 400mm or wider, choose double. The extra $50–$130 pays itself back in convenience and avoids the upgrade most single-bin customers do within two years.
Browse our range of double pull out bins for 400mm, 450mm and 600mm Australian cabinets.
Bottom-Mounted vs Side-Mounted Underbench Bins
|
Feature |
Bottom-Mounted |
Side-Mounted |
|
Mount point |
Cabinet floor |
Both side walls |
|
Cabinet requirements |
Forgiving |
Needs precise alignment |
|
Typical load rating |
25kg+ |
15–20kg |
|
Best for |
Retrofits and new builds |
Built-for-purpose new cabinetry |
|
DIY difficulty |
Easy (20–45 min) |
Moderate |
|
Used in 95% of Australian fit-outs |
✅ |
❌ |
· Bottom-mounted bins install on the cabinet floor — the frame screws to the base and the bin slides on integrated soft-close runners. They suit any standard Australian cabinet, handle heavier loads, and are forgiving if the cabinet walls aren't perfectly square.
· Side-mounted bins use drawer-style runners attached to both side walls. They look sleeker but demand precise alignment, and most installers don't recommend them for retrofits.
For 95% of Australian retrofit installations, bottom-mounted is the right choice.
People also ask: Are soft-close bins worth it? Yes — soft-close runners extend the life of the entire pull-out mechanism by preventing slam impact, and they're quieter in open-plan Australian homes. Across our installation data, soft-close systems outlast non-soft-close by roughly 3x.
How to Measure Your Cabinet for an Under Sink Bin
Five minutes with a tape measure prevents the most common buying mistake we see — choosing on litres alone.
Step 1: Measure internal cabinet width
Measure the usable internal width, not the external door width. Australian standard sink cabinet widths are 300mm, 400mm, 450mm, 600mm and 800mm.
- 300mm → small single bin (20–28L)
- 400mm → twin pull-out (30–40L)
- 450mm → twin pull-out (35–45L)
- 600mm → large twin or triple (50–70L)
Step 2: Measure internal cabinet depth
Measure from the back wall to the inside edge of the closed cabinet door. Pull-out bins typically need 450–500mm depth for the runner system. Most quality systems use 500mm ball-bearing runners.
Step 3: Check plumbing and S-bend clearance
Under-sink plumbing is the biggest enemy of bin fit. Allow 80–120mm clearance around the S-bend or P-trap. Watch out for:
- Sink waste trap (S-bend / P-trap)
- Water filter housings
- Instant hot water units
- Dishwasher waste hoses
Low-profile under sink bins (typically under 460mm tall) are specifically designed to clear plumbing.
People also ask: Can a pull out bin fit around plumbing? Yes — low-profile bottom-mount pull-outs are designed to fit around standard Australian S-bend and P-trap plumbing. Allow 80–120mm clearance around the trap and choose bins under 460mm in height.
Step 4: Check door clearance
Allow at least 90° of door swing so the cabinet door fully clears the pull-out frame. This matters most for corner cabinets, handleless kitchens and integrated cabinetry.
What to Look For in a Quality Under Sink Bin
A quality concealed kitchen bin should last 10+ years of daily use in an Australian kitchen. Look for these specs:
- Ball-bearing runners — premium-grade. Cheap nylon runners fail within 18 months.
- Soft-close mechanism — prevents slamming, extends runner life
- Removable buckets — essential for cleaning
- Polypropylene (PP) bin material — durable, doesn't stain
- Closed or fitted lids — control odour (If odour control is a major concern in your kitchen, read our guide on kitchen waste bins that help reduce smells, improve airflow and keep rubbish concealed in modern Australian homes.)
- Optional door bracket — converts your cabinet door into a one-pull system
- Load rating of 20kg+ per drawer
- 5-year warranty minimum from the manufacturer
Bin Liner Sizes for Under Sink Bins
Using the wrong liner is the #1 cause of bin leakage and slippage. Match your bin to its liner:
|
Bin Capacity |
Liner Size |
Approx Bag Dimensions |
|
8–10L |
8L liner |
38.5cm W × 40cm H |
|
15–20L |
18–20L liner |
42cm W × 54cm H |
|
27–35L |
30L liner |
51cm W × 57cm H |
|
35–45L |
36L liner |
58cm W × 71cm H |
|
50–70L |
60L liner |
60cm W × 94cm H |
Compostable liners are standard for FOGO compartments — most Australian councils accept certified compostable bags in green-lid bins.
Common Mistakes We See Customers Make
Across our installation data from Australian kitchens, these are the recurring mistakes worth avoiding:
· Choosing on litres alone. A 40L bin is useless if it doesn't clear your S-bend. Measure cabinet width, depth and plumbing first.
· Ignoring recycling needs. Single-bin buyers almost always upgrade to twin within two years. If your cabinet is 400mm+, go twin from the start.
· Buying too small. Compact 15L bins seem space-savvy but force daily emptying. For 3+ person Australian households, 30L+ is almost always more convenient.
· Forgetting cabinet storage. An oversized bin can swallow space needed for dishwasher tablets and sprays. Balance bin capacity with what else lives under the sink.
· Skimping on runners. Cheap pull-out systems with nylon runners fail within 12–18 months. Spend the extra $40–80 on ball-bearing soft-close runners.
How Much Does a Quality Under Sink Bin Cost in Australia?
Expect to pay:
- $80–$150 AUD for a single pull-out (20–35L) with basic runners
- $150–$280 AUD for a twin pull-out (30–45L) with soft-close
- $250–$400+ AUD for premium twin or triple systems with door brackets and 5-year warranties
Over a 10-year service life, that's under $30 per year — a small price for a kitchen that stays tidy every day.
Browse our complete range of under sink bins by budget and capacity at our website.
Are Under Sink Bins Worth It?
For most Australian kitchens, yes. A pull-out under sink rubbish bins hides rubbish, reduces visual clutter, reclaims floor space and makes recycling easier — and modern soft-close systems install in under an hour with basic DIY tools.
The case is strongest for Australian kitchens with open-plan living areas, where a visible freestanding bin disrupts the look of the whole space.
Frequently Asked Questions
What size under sink bin is best for an Australian family?
For most Australian families, a 30–40L twin pull-out bin in a 400mm cabinet offers the best balance of capacity, cabinet fit and recycling capability. Larger households (5+) or homes running FOGO separation should consider 50–70L twin or triple systems in a 600mm cabinet.
Is a 20L kitchen bin enough?
A 20L kitchen bin is usually enough for singles, couples and minimal-waste households, providing four to five days of capacity. Larger Australian families will fill it within 24 hours, especially once food scraps are included, and should size up to 30L or larger.
What's the difference between an under sink bin and an underbench bin?
"Under sink bin" refers specifically to a bin in the cabinet below the kitchen sink, where plumbing dictates the fit. "Underbench bin" is the broader term for any pull-out bin in a base cabinet, including non-sink locations. Most under sink bins are underbench bins, but not all underbench bins are under sink bins.
Can a pull-out bin fit around plumbing?
Yes — low-profile under sink bins are specifically designed for this. Look for bins under 460mm in height with bottom-mount frames, and allow 80–120mm clearance around the S-bend or P-trap. Twin 30L low-profile systems fit comfortably around most standard Australian plumbing in a 400mm cabinet.
Are under sink bins hard to install?
No — most bottom-mount pull-out bins are genuine DIY installs taking 20–45 minutes. You'll need a drill, screwdriver and tape measure. Side-mount systems are more complex and often need professional fitting. Bottom-mount is the easier choice for retrofits in Australian kitchens.
Do under sink bins smell?
A well-fitted under sink bin with a closed soft-close lid and regularly changed liners produces less odour than an open freestanding bin. For FOGO compartments, use certified compostable liners and empty every two to three days in summer.
What cabinet width is needed for an underbench bin?
Australian standard sink cabinets come in 300mm, 400mm, 450mm and 600mm widths. Single pull-outs fit 300mm cabinets, twin pull-outs need 400mm or 450mm, and large twin or triple systems require 600mm.
What size bin liner fits a 30L under sink bin?
A 30L under sink bin takes a liner roughly 51cm wide × 57cm high. Most Australian supermarket "kitchen tidy" 27L–36L bags fit this size. Always check the bag dimensions against the bin, not just the litre rating.
Are double under sink bins worth it?
Yes — for most Australian households, double pull-outs are the more versatile choice. They handle recycling and FOGO separation in one concealed unit, eliminate the need for visible secondary bins, and only cost $50–$130 more than singles. They suit any cabinet 400mm or wider.
How much does a quality under sink bin cost in Australia?
Quality under sink bins in Australia range from $80–$150 for singles, $150–$280 for soft-close twins, and $250–$400+ for premium triple systems with door brackets. Spending in the mid-range typically gets you premium ball-bearing runners and a 5-year manufacturer warranty.
What is the most popular under sink bin size in Australia?
The most popular under sink bin size in Australia is a 30L twin pull-out (2 × 15L) designed for a 400mm cabinet. It fits the standard Australian sink cabinet, handles a family's daily waste plus recycling, and is the configuration we see in roughly 70% of fit-outs.
Can you install a slide-out rubbish bin under any sink?
Most Australian kitchens can accommodate a slide-out rubbish bin, but plumbing layout, cabinet width and internal depth determine which system fits. Measure cabinet width, depth, and S-bend clearance before purchasing.
Final Thoughts
The best under sink bin isn't the biggest one — it's the one that fits your cabinet properly, matches your household's waste habits, and handles recycling the way you actually live.
For small Australian homes, a compact 20L single works beautifully. For most Australian family kitchens, a 30–40L twin pull-out in a 400mm cabinet is the proven default. For larger or recycling-heavy households, sizing up to a 50–70L twin or triple in a 600mm cabinet is rarely regretted.
Measure first, factor in plumbing, choose ball-bearing runners with soft-close, and your concealed kitchen bin will quietly do its job for the next decade.
Ready to upgrade? Browse our full range of under sink bins, pull out kitchen bins, double pull out bins and soft close bin systems built for Australian kitchens.
About Kitchen Organisers
Kitchen Organisers specialises in premium kitchen storage solutions for Australian homes, including pull-out bins, pantry systems and under sink organisers. Our team has helped thousands of Australian homeowners choose concealed bin systems that fit modern Australian cabinetry — from compact 300mm apartment kitchens to 600mm triple-compartment recycling systems for large family homes.
Every recommendation in this guide is based on installation data and customer fit-out trends across Australian kitchens. Browse our full range at kitchenorganisers.com.au.