View Our Chair Fitting Form - Click Here

Mid-Back Ergonomic Task Chair for Petite to Medium Users (5'0"–5'4")

The Office Master PT69 Mid-Back Ergonomic Task Chair is designed specifically for users 5'0"–5'4" who need adjustable lumbar support, seat depth customization, and multi-tilt functionality in a chair sized for smaller frames. With professional-grade adjustability and durable construction supporting up to 300 lbs, the PT69 delivers ergonomic comfort for all-day productivity without the poor fit of oversized chairs.

Why PT69 for Petite to Medium Users

• Sized for 5'0"–5'4" Users: Mid-back design prevents the poor fit that occurs when smaller users sit in standard-sized chairs
• Adjustable Lumbar Support: Customizable lower back support reduces fatigue and prevents slouching during extended sitting
• Seat Depth Adjustment (Slider): Ensures proper thigh support without pressure behind knees
• Multi-Tilt Functionality: Independent seat tilt, back tilt, and forward tilt provide dynamic sitting options
• Easy Back Height Adjustment: Raise or lower backrest to align lumbar support with your lower back curve
• Pneumatic Height Adjustment: Smooth seat height adjustment accommodates various desk heights
• 300 lb Weight Capacity: Durable construction with 12-year limited warranty

Clinical Benefits for Ergonomic Seating

Standard office chairs are designed for average-height users (5'8"–5'10"), leaving petite users with poor ergonomic fit—feet dangling, lumbar support positioned too high, seat depth too long causing pressure behind knees. The PT69's mid-back design and extensive adjustability solve these problems by providing proper support scaled to smaller body dimensions.

Who It's Built For

Essential for users 5'0"–5'4" experiencing poor fit in standard chairs, office professionals needing all-day ergonomic support, home office workers seeking professional-grade seating, corporate environments standardizing ergonomic task chairs, and anyone experiencing back pain from chairs that don't fit their body dimensions.

Technical Specifications

• Seat Height Range: Adjustable (pneumatic)
• Seat Dimensions: Adjustable depth with slider mechanism
• Back Style: Mid-back with adjustable height
• Weight Capacity: 300 lbs
• Lumbar Support: Adjustable height and depth
• Tilt Mechanism: Multi-tilt (independent seat/back tilt, forward tilt, tension adjustment)
• Armrest Options: No arms or KR-200 height-adjustable arms
• Upholstery: Grade 1 Black fabric (call for additional fabric options)
• Base: 5-star nylon base with dual-wheel casters
• Warranty: 12-year limited warranty
• Manufacturer: Office Master (Made in USA)
• User Height Range: Optimized for 5'0"–5'4"

PT69 vs. PT74: Which Chair is Right for You?

Choose PT69 if you are: 5'0"–5'4" and need mid-back support scaled for petite frames

Choose PT74 if you are: 5'4"–5'8" and need low-back support for small to medium frames

Armrest Options

No Armrests: Clean, open design allows freedom of movement and fits under lower desks.

KR-200 Height-Adjustable Armrests: Adjustable-height arms provide forearm support to reduce shoulder elevation and neck tension.

Office Master Quality & Warranty

Manufactured by Office Master in the USA with commercial-grade components designed for daily office use. The 12-year limited warranty reflects Office Master's confidence in long-term durability and performance.

Frequently Asked Questions

What height range is this chair designed for?

The PT69 is optimized for users 5'0"–5'4". The mid-back design, seat dimensions, and adjustment ranges are scaled for petite body dimensions to ensure proper ergonomic fit.

What's the difference between PT69 and PT74?

The PT69 is designed for users 5'0"–5'4" with mid-back design. The PT74 is designed for users 5'4"–5'8" with low-back design. Choose based on your height for optimal fit.

Should I choose the version with or without armrests?

Choose armrests (KR-200) if you rest your forearms while typing or using a mouse. Choose no armrests if you prefer freedom of movement or have limited desk clearance.

Can I get this in a different fabric or color?

Yes! The standard configuration is Grade 1 Black fabric. Call us for additional fabric options, colors, and custom configurations.

What's the weight capacity?

The PT69 supports up to 300 lbs with commercial-grade construction designed for daily office use.

Why Ask Ergo Works

As certified ergonomics specialists with over 30 years of experience, we've helped hundreds of professionals find the right ergonomic seating for their body dimensions and work requirements. The Office Master PT69 is our top recommendation for users 5'0"–5'4" who need professional-grade ergonomic adjustability without the poor fit of standard-sized chairs.

Free shipping on orders over $99. 12-year warranty. Made in USA. Custom-built to order. Optimized for 5'0"–5'4" users. Call for volume pricing and fabric options.

⚠️ Made-to-Order: Each chair is made-to-order based on your selections to ensure the best fit and performance. Because of this, orders are final—but we're here to help you get it right.