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Low Back Ergonomic Task Chair for Small to Medium Users (5'4"–5'8")

The Office Master PT74 Paramount Value Series is a low-back ergonomic task chair designed specifically for users 5'4"–5'8" who need adjustable lumbar support, seat depth customization, and multi-tilt functionality without the bulk of oversized chairs. With professional-grade adjustability and durable construction supporting up to 300 lbs, the PT74 delivers ergonomic comfort for all-day productivity in home offices, corporate workspaces, and shared seating environments.

Key Features & Benefits

• Sized for 5'4"–5'8" users — Low-back design prevents the poor fit and lack of support that occurs when smaller users sit in oversized chairs
• Adjustable lumbar support — Height and depth adjustable to align with your lower back curve and reduce fatigue during extended sitting
• Seat depth adjustment (3" slider) — 17"–20.1" depth range ensures proper thigh support without pressure behind the knees
• Multi-tilt mechanism — Independent seat tilt, back tilt, and forward tilt provide dynamic sitting options and encourage healthy posture changes
• Easy back height adjustment — Raise or lower backrest to align lumbar support with your specific spinal curve
• Pneumatic seat height adjustment — 17"–22" range accommodates various desk heights
• Rocking & forward tilt — Tension-adjustable tilting encourages active sitting and reduces static muscle fatigue
• 300 lb weight capacity
• 12-year limited warranty — Made in USA by Office Master

Technical Specifications

• Seat Height Range: 17"–22" (pneumatic)
• Seat Dimensions: 20"W × 17"–20.1"D (3" slider)
• Back Dimensions: 17"W × 18"H (low-back)
• Overall Width: 27"
• Overall Height: 35"–44" (adjustable)
• Weight Capacity: 300 lbs
• Lumbar: Adjustable height and depth
• Mechanism: Multi-tilt (independent seat/back tilt, forward tilt, tension adjustment, tilt lock)
• Armrests: No arms or KR-200 height-adjustable arms
• Upholstery: Grade 1 Black fabric (call for additional options)
• Base: 5-star nylon with dual-wheel casters
• Warranty: 12-year limited warranty
• Manufacturer: Office Master (Made in USA)
• Optimized for: Users 5'4"–5'8"

⚠️ 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.

Ideal For

• Users 5'4"–5'8" experiencing poor fit in standard-sized office chairs
• Office professionals needing all-day ergonomic support scaled to their body dimensions
• Home office workers seeking professional-grade seating at a value price
• Corporate environments standardizing ergonomic task chairs for smaller-statured employees
• Shared workspaces requiring adjustable seating for multiple users of varying heights

Frequently Asked Questions

What height range is this chair designed for?

The PT74 is optimized for users 5'4"–5'8". The low-back design, seat dimensions, and adjustment ranges are scaled for smaller body dimensions to ensure proper ergonomic fit. If you're outside this range, our specialists can help identify a better-matched model.

What is the difference between the PT74, PTYM, and PT78?

All three are part of the Paramount Value Series. The PT74 is the low-back model optimized for users 5'4"–5'8". The PTYM is the mid-back model for standard-height users. The PT78 is the tall-back model for users who need additional upper back coverage. Our specialists can help you determine which is right for your body.

Should I choose the version with or without armrests?

Choose KR-200 armrests if you rest your forearms while typing or using a mouse — they reduce shoulder and neck tension. Choose no armrests if you prefer freedom of movement, have limited desk clearance, or don't use armrests while working.

How do I adjust the seat depth?

The seat slider (typically located under the front of the seat) allows you to slide the seat forward or back within the 3" range. Adjust so there's 2–3 fingers width between the seat edge and the back of your knees when sitting fully back in the chair.

Can I get this in a different fabric or color?

Yes — the standard configuration is Grade 1 Black fabric. Contact us for additional fabric options, colors, and custom configurations. Volume pricing is also available for multiple chair orders.

Can I try this chair before ordering?

Yes — visit our Bay Area showroom where our certified specialists can walk you through the PT74 and confirm it's the right fit for your body dimensions. We offer ergonomic consulting services in-person and virtually. Schedule a consultation.

How long does delivery take?

As a made-to-order chair, lead times vary by configuration. Contact us for current estimates before placing your order.

What warranty is included?

The PT74 includes Office Master's 12-year limited warranty — a strong indicator of commercial-grade construction quality. Contact us for full warranty terms.

What is the weight capacity?

The PT74 supports up to 300 lbs with commercial-grade construction designed for daily office use.

Why Ask Ergo Works?

With 30+ years of ergonomic expertise, Ask Ergo Works is not a general furniture retailer — we are certified ergonomic specialists who assess your specific needs before recommending any product.

• Certified specialists — Professional ergonomic certifications and ongoing clinical training
• Professional assessment process — We evaluate your body dimensions, posture, and work habits before recommending a chair
• Personalized recommendations — Every recommendation is specific to your height, build, and workspace
• Enterprise & B2B experience — Volume purchasing support for corporate offices, healthcare, education, and lab environments
• Post-purchase support — Available after delivery to assist with setup, adjustments, and ongoing ergonomic guidance

Not sure if the PT74 is the right fit for your height and needs? We offer ergonomic consulting services to help you confirm the right chair before you order. Learn more and book a consultation.