Re-measure the boundary
Check the narrowest point, trim, hinges, baseboards, wall variation, or obstruction that can reduce the usable space below the headline measurement.
Dimension-qualified shortlist
4 products that meet the limit
Sorted from smallest to largest by width. Dimensions and retailer availability can change, so verify the exact model before ordering.
Affiliate disclosure: As an Amazon Associate, Small Space Buyer earns from qualifying purchases. This does not change the price you pay.
| Product | Exterior dimensions | Capacity | Setup |
|---|---|---|---|
| BLACK+DECKER BPWM09W17.7 in. width | 17.7 W × 18.1 D × 31.5 H in. | 0.9 cu. ft. / 6.6 lb. | Quick-connect sink adapter, water-supply hose, and drain hose are included |
| COMFEE' CLV16N2AMG20.3 in. width | 20.3 W × 20.7 D × 37 H in. | 1.6 cu. ft. / 11 lb. | Water inlet hose and faucet converter are included; verify the faucet threads before ordering |
| BLACK+DECKER BPWM16W20.3 in. width | 20.3 W × 20.7 D × 36.6 H in. | 1.7 cu. ft. / 11 lb. | Quick-connect sink adapter, water-supply hose, and drain hose are included |
| Hamilton Beach HBPW16021 in. width | 21 W × 22 D × 38 H in. | 1.6 cu. ft. / 11 lb. | Quick-connect sink adapter supports temporary faucet use |
Use the shortlist correctly
This filter answers one question—not the whole fit.
Every product here meets the published width limit of 21 inches. Use the shortlist as the first pass, then confirm the complete opening, operating position, access path, and setup before ordering.
Map the product in use
Add doors, lids, drawers, baskets, hoses, cords, ventilation, loading room, and the body space needed to use the product safely.
Verify the exact setup
Open the linked specification source and manual for the exact model. Confirm utilities, mounting, stability, delivery, and any building or lease rules.
#1 · 17.7 in. widthBLACK+DECKER · BPWM09W
BLACK+DECKER 0.9 Cu. Ft. Portable Washer, 6.6 lb. Capacity, BPWM09W, for Homes & Apartments, 5 Wash Cycles, Quick Connect Sink Adapter and Drain Hose Included
Best for: One person, very tight spaces, and small loads washed often
- Exterior size
- 17.7 W × 18.1 D × 31.5 H in.
- Capacity
- 0.9 cu. ft. / 6.6 lb.
- Setup
- Quick-connect sink adapter, water-supply hose, and drain hose are included
- Verified
- August 30, 2026
#2 · 20.3 in. widthCOMFEE' · CLV16N2AMG
COMFEE' 1.6 Cu. Ft. Portable Washing Machine, 11 lb. Capacity Fully Automatic Compact Washer with Wheels, 6 Wash Programs, Drain Pump, Magnetic Gray
Best for: Apartment shoppers who value simple controls and wheels
- Exterior size
- 20.3 W × 20.7 D × 37 H in.
- Capacity
- 1.6 cu. ft. / 11 lb.
- Setup
- Water inlet hose and faucet converter are included; verify the faucet threads before ordering
- Verified
- August 30, 2026
#3 · 20.3 in. widthBLACK+DECKER · BPWM16W
BLACK+DECKER 1.7 Cu. Ft. Portable Washer, 11 lb. Capacity, BPWM16W, Sink Adapter and Drain Hose Included, Cold and Hot Water Use
Best for: A familiar mid-size choice with broad Amazon and Walmart availability
- Exterior size
- 20.3 W × 20.7 D × 36.6 H in.
- Capacity
- 1.7 cu. ft. / 11 lb.
- Setup
- Quick-connect sink adapter, water-supply hose, and drain hose are included
- Verified
- August 30, 2026
#4 · 21 in. widthHamilton Beach · HBPW160
HAMILTON BEACH HBPW160 Portable Washing Machine, 1.6 cu. ft., White
Best for: A balanced capacity for one or two people without full-size hookups
- Exterior size
- 21 W × 22 D × 38 H in.
- Capacity
- 1.6 cu. ft. / 11 lb.
- Setup
- Quick-connect sink adapter supports temporary faucet use
- Verified
- August 30, 2026
Beyond the headline number
Confirm the complete working fit
Use the narrowest point
Measure baseboards, trim, door casing, and the route from storage to the faucet. Leave practical side clearance rather than selecting a cabinet exactly as wide as the opening.
Add lid and hose space
Confirm the fully opened lid height and leave room behind the washer for hoses to bend naturally. Published cabinet depth does not include the complete operating setup.
Keep the routine movable
Narrow does not mean light. Check product weight, wheel design, thresholds, and the path between storage and operation if the machine will move for every load.
Dimension questions
Portable Washers 21 Inches Wide or Less: FAQ
Will a 21-inch washer fit a 21-inch opening?
Do not assume an exact match is adequate. Add the manufacturer's required clearances and enough room for safe movement, hoses, vibration, and installation.
Does width include the hoses?
Cabinet width normally does not include the rear hose path. Compare width, depth, and the complete connection layout separately.
Are narrow portable washers only for one person?
Not necessarily, but smaller cabinets often mean smaller loads and more frequent cycles. Compare capacity with the household's normal laundry.
Need a different limit?