The ProBasics K4 Lite wheelchair 18 inch seat width, is a high-strength, lightweight manual mobility chair engineered specifically to deliver adaptable positioning, dependable everyday durability, and effortless transport for active adults. Fabricated with a high-strength, lightweight metal alloy frame, this Medicare-coded K0004 wheelchair safely accommodates user weight capacities up to 300 lbs while keeping the overall frame weight manageable for independent self-propulsion and caregiver lifting. Ideal for residential home use, hospital rehabilitation programs, and clinical healthcare environments, it combines ergonomic seating comfort with versatile modular adjustments for both short- and long-term recovery.
Designed around the most widely prescribed adult seating dimension, this model (WC4L1816DE) features an 18-inch seat width paired with an initial 16-inch depth that can quickly expand from 16 to 18 inches using an included seat rail and upholstery extension, adapting seamlessly to changing user posture needs without requiring replacement slings. Padded flip-back armrests offer vertical height adjustment from 10 to 14 inches, enabling users to sit comfortably close to desks and dining tables while opening an unobstructed lateral pathway for sliding-board transfers. Outfitted with tool-free swing-away footrests for swift standing transfers, 3-position quick-release rear axles for rapid wheel detachment and hemi-height foot propulsion, flat-free polyurethane rear drive tires, composite front casters, wrap-around height-adjustable back upholstery, factory-installed adjustable rear anti-tippers, and positive push-to-lock wheel brakes, the ProBasics K4 Lite delivers smooth, puncture-proof mobility across indoor rooms and outdoor paths.

Key Features & Clinical Mobility Benefits
- High-strength lightweight frame construction delivers long-term durability with reduced lifting effort for caregivers
- Popular 18-inch seat width provides balanced pelvic stability and comfortable hip spacing for standard adult users
- Included seat rail and upholstery extension adjust seat depth smoothly from 16 inches to 18 inches
- 3-position quick-release rear axles allow tool-free push-button wheel removal and rapid hemi-height conversion
- Flip-back padded armrests feature vertical height adjustments from 10″ to 14″ to clear table tops and ease slide transfers
- Tool-free swing-away footrests pivot outward and detach quickly to facilitate safe, unobstructed standing transfers
- Wrap-around height-adjustable nylon back upholstery contours around the spine for personalized lumbar support
- Flat-free polyurethane rear tires paired with durable composite casters eliminate flat-tire maintenance completely
- Standard adjustable rear anti-tippers provide critical rearward stability on threshold inclines and access ramps
- Positive-action push-to-lock manual wheel brakes keep the chair firmly stationary during sit-to-stand movements
- Lateral folding cross-brace design collapses in seconds for compact vehicle trunk transport and home storage
- Standardized healthcare billing classification references HCPCS K0004, K0195, E0971, and K0040
Product Specifications
| Specification |
Details |
| Brand / Series |
ProBasics K4 Lite Series |
| Model Item Number |
WC4L1816DE |
| Product Type |
Lightweight High-Strength Manual Wheelchair |
| HCPCS Billing Reimbursement Codes |
K0004, K0195, E0971 (Anti-Tippers), K0040 (Angle Footplates) |
| Frame Construction |
High-Strength Lightweight Metal Alloy |
| Maximum Weight Capacity |
300 lbs |
| Seat Dimensions |
18-Inch Seat Width × 16-Inch Seat Depth (Expandable to 18 Inches) |
| Armrest Configuration |
Flip-Back Padded Armrests (Height Adjustable 10″ to 14″) |
| Front Rigging Configuration |
Tool-Free Swing-Away Footrests with Footplates |
| Axle System |
3-Position Quick-Release Axles (Tool-Free Hemi-Height Adjustable) |
| Back Upholstery Style |
Wrap-Around Nylon, Height-Adjustable |
| Seat Upholstery Material |
Breathable, Wipe-Clean Black Nylon |
| Drive Tires |
Solid Flat-Free Polyurethane Tires |
| Front Caster Material |
Heavy-Duty Composite Casters |
| Safety Hardware |
Adjustable Rear Anti-Tippers Included |
| Brake System |
Positive Push-to-Lock Manual Wheel Locks |
| Recommended Applications |
Daily Independent Mobility, Clinical Care, and Rehabilitation |
Who Is This For & Everyday Applications
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Standard-Build Adult Users: The 18-inch seat width delivers an optimal anatomical fit for average-sized adults, preventing hip crowding while preserving easy doorway navigation.
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Rapid Standing Transfers: Swing-away footrests unlock with an ergonomic lever to pivot completely aside, leaving the floor clear for safe standing and seated transfers.
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Independent Foot Propellers: Quick-release 3-position axle brackets allow the frame to drop down to hemi height so users can walk the wheelchair forward using their feet.
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Workstation & Dining Accessibility: Armrests adjust between 10″ and 14″ to slide neatly under office desks and dining tables, and flip back fully for bed sliding-board transfers.
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Effortless Car Trunk Loading: Quick-release rear axles pop off instantly with the press of a button, drastically reducing lifting weight when stowing the chair in a vehicle.
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Incline & Ramp Safety: Factory-installed adjustable anti-tippers prevent backward tipping when ascending outdoor curb cuts or threshold ramps.
Usage, Adjustment & Routine Care Guidance
To unfold, press downward firmly on both outer seat rail tubes until the folding cross-brace locks fully open and the nylon seat sling is completely taut. Align the swing-away footrests over the front receiver pins and swing inward until the locking pins click firmly into place. To change armrest height, press the adjustment buttons on the side support tubes and slide the padded rests to any desired height between 10 and 14 inches. For vehicle transport, press the center push-button on each rear wheel axle to detach the drive wheels from the frame. Always engage both push-to-lock wheel brakes securely before standing up, sitting down, or transferring. Clean the frame and nylon upholstery with a damp cloth and mild soap or hospital-grade disinfectant wipes, drying completely with a clean towel.
Explore More Mobility Solutions at All Care Store
At All Care Store, we are committed to enhancing everyday independence and clinical care with high-quality, dependable medical equipment, shipped quickly nationwide from Plano, Texas. Whether you are outfitting a private home or managing patient mobility across healthcare facilities, discover our complete line of specialized mobility collections:
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