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 properly 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 standard chairs. Key Features & Benefits Sized for 5'0"–5'4" users — Mid-back design scaled for petite frames prevents the poor fit that occurs when smaller users sit in standard-sized chairs Adjustable lumbar support — Height and depth adjustable to align with your lower back curve and reduce fatigue during extended sitting Seat depth adjustment (slider) — Ensures proper thigh support without pressure behind the knees for shorter leg lengths Multi-tilt mechanism — Independent seat tilt, back tilt, and forward tilt provide dynamic sitting options and encourage healthy posture changes Adjustable back height — Raise or lower backrest to align lumbar support with your specific spinal curve Pneumatic seat height adjustment — Smooth tool-free adjustment for optimal desk and monitor alignment 300 lb weight capacity 12-year limited warranty Technical Specifications Model: Office Master PT69 SKU: PT69 Grade 1 Fabric Black Back Style: Mid-back with adjustable height Weight Capacity: 300 lbs Seat Height: Pneumatic adjustment Seat Depth: Adjustable slider Lumbar: Adjustable height and depth Mechanism: Multi-tilt (independent seat/back tilt, forward tilt, tension adjustment) 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 Optimized for: Users 5'0"–5'4" ⚠️ 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. PT69 vs. PT74: Which 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 Ideal For Users 5'0"–5'4" experiencing poor fit in standard-sized office chairs Office professionals needing all-day ergonomic support scaled to petite body dimensions Home office workers seeking professional-grade seating at a value price Corporate environments standardizing ergonomic task chairs for smaller-statured employees Anyone experiencing back pain from chairs that don't fit their body dimensions 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. If you're outside this range, our specialists can help identify a better-matched model. What is the difference between the PT69 and PT74? The PT69 is designed for users 5'0"–5'4" with a mid-back design. The PT74 is designed for users 5'4"–5'8" with a low-back design. Both feature the same adjustment platform — the key difference is the back height and overall proportions scaled to each height range. 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. 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 PT69 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 PT69 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 PT69 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 PT69 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.
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