Interactive Whiteboard Size Guide: 65” vs 75” vs 86” vs 98” – How to Choose Right Size

Interactive Whiteboard Size Explained: How to Choose the Right Size — and Why Bigger Is Not Always Better

When customers ask about interactive whiteboards, one of the first questions is almost always:

“What size should I choose?”

On paper, the answer looks simple.
Bigger screen, better experience — right?

But in real-world projects, especially in education and commercial environments, screen size is one of the most misunderstood parameters. Choosing the wrong size doesn’t just waste budget — it can reduce usability, shorten lifespan, and create long-term maintenance issues.

At Qtenboard, we manufacture interactive whiteboards in 55, 65, 75, 86, 98, 105, and 110 inches. And after years of factory production, project delivery, and customer feedback, one pattern is very clear:

65”, 75”, and 86” are consistently the best-selling sizes — for very good reasons.

This article explains what each size is really suitable for, why some “bigger” options don’t always make sense, and how Qtenboard approaches size selection from a factory and engineering perspective.

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Why Screen Size Is More Than Just Inches

Most buyers compare size the same way they compare TVs at home:

• Larger number = higher level
• Bigger screen = more value

But interactive whiteboards are not consumer TVs.

They are:

• Used at close distance
• Written on, not just watched
• Installed permanently
• Expected to work reliably for years

That changes how size should be evaluated.

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Qtenboard’s Standard IWB Size Range (And Why It Matters)

Qtenboard’s standard interactive whiteboard sizes are:

• 55”
• 65”
• 75”
• 86”
• 98”
• 105”
• 110” (maximum)

This range is not random. Each size exists because it fits a real usage scenario, not because it looks good on a spec sheet.

Let’s go through them one by one.

55”: Compact Spaces and Personal Interaction

Typical scenarios

• Small meeting rooms
• Training rooms
• One-on-one teaching
• Corporate offices with limited wall space

Why choose 55”

• Easy installation
• Lower power consumption
• Comfortable writing height
• Cost-effective for small spaces

Limitations

• Not suitable for large classrooms
• Limited visibility beyond short distances

At Qtenboard, 55” is usually chosen when space is the main constraint, not when visibility is the priority.

65”: The Most Popular Entry-Level Size

Typical scenarios

• Small to medium classrooms
• Standard meeting rooms
• Training centers
• Hybrid learning rooms

Why 65” sells so well

• Excellent balance between size and usability
• Clear visibility without overwhelming the room
• Comfortable touch height for most users
• Easy logistics and installation

For many first-time buyers, 65” is the safest choice. It fits most rooms without requiring structural changes or special mounting considerations.

This is one of Qtenboard’s highest-volume production sizes, optimized on both automated and manual assembly lines.

75”: The Sweet Spot for Modern Classrooms

If we had to name one size that represents the “modern classroom standard”, it would be 75 inches.

Typical scenarios

• Standard classrooms (30–50 students)
• Medium conference rooms
• Corporate training spaces

Why 75” performs so well

• Excellent viewing angle and readability
• Ideal balance between screen area and writing comfort
• Works well with 4K resolution
• High acceptance across global markets

From a factory perspective, 75” offers:

• Stable panel supply
• Mature structural design
• Consistent quality control

This is why 75” remains one of Qtenboard’s best-selling and most stable models.

86”: The Most Widely Used Professional Size

86 inches is where interactive whiteboards truly enter the professional-grade category.

Typical scenarios

• Large classrooms
• Lecture halls
• Boardrooms
• Government or institutional spaces

Why 86” is a top seller

• Excellent visibility even in deep rooms
• Comfortable writing surface for teachers and presenters
• No need to scale UI excessively
• Strong balance between size and reliability

At Qtenboard, 86” is a core size:

• Fully optimized for robotic assembly
• Strict mechanical tolerance control
• Double-stage quality inspection (automation + manual)

It is large enough to feel impressive, yet still practical for daily interactive use.

98”: Large Format, But With Trade-Offs

98” starts to push the limits of traditional classroom installation.

Typical scenarios

• Very large classrooms
• Lecture rooms
• Specialized corporate spaces

Things to consider

• Higher installation requirements
• Transportation complexity
• Wall structure strength
• Increased power consumption

While 98” can be a good choice in the right environment, it already requires careful planning — not just “bigger is better” thinking.

105”: Why This Size Is Special — and More Expensive Than 110”

This often surprises customers:

“Why is 105 inches more expensive than 110 inches?”

The answer lies in panel origin and production logic.

105” panels:

• Are produced in very limited quantities
• Have lower manufacturing yield
• Are not mainstream in consumer markets
• Require stricter quality control

In many cases, 105” panels are true commercial-grade LCD panels, not consumer TV derivatives.

From a factory standpoint:

• Structural design is more complex
• Assembly precision requirements are higher
• Reject rates are higher

This is why 105” can cost more than 110”, even though the number is smaller.

110”: The Maximum — and Where Caution Is Needed

110” is the maximum size Qtenboard offers, and we are very careful about how we position it.

Why we do not actively recommend sizes above 110”

• Installation risk increases significantly
• Panel handling becomes extremely sensitive
• Transportation damage risk rises
• Long-term reliability becomes harder to guarantee

More importantly:

Above 110 inches, most “interactive whiteboards” in the market are likely TV-converted products.

As discussed in our Buying Guide series, consumer TV panels are not designed for:

• Long daily operation
• Heavy touch interaction
• Commercial thermal environments

This is why Qtenboard does not promote ultra-large sizes as a default solution.

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Why 65”, 75”, and 86” Sell the Best (The Real Reasons)

This is not marketing preference — it’s usage reality.

These three sizes:

• Fit most classrooms and meeting rooms
• Offer ideal viewing distance vs resolution
• Are comfortable for writing and interaction
• Have the most stable panel supply
• Deliver the best long-term reliability

From a factory perspective:

• These sizes benefit most from automated robotic assembly
• Mechanical tolerances are well-controlled
• Quality consistency is highest
• After-sales issues are lowest

That’s why Qtenboard invests the most resources into perfecting these sizes.

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How Qtenboard Manufactures Size-Optimized IWBs

Qtenboard uses a hybrid production system:

Robotic Assembly Line

• High-precision panel placement
• Consistent mechanical alignment
• Reduced human error
• Stable batch-to-batch quality

Manual Verification Line

• Touch accuracy inspection
• Optical uniformity check
• Structural integrity review
• Functional testing

This dual system allows us to:

• Scale production efficiently
• Maintain strict quality standards
• Adapt quickly to size-specific requirements

Bigger screens demand tighter control — not looser standards.

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How to Choose the Right Size (Practical Advice)

Instead of asking:

“What’s the biggest size I can afford?”

Ask:

• How far will viewers sit?
• How many people will interact?
• How often will the board be used?
• Is the wall structure suitable?
• Do we prioritize reliability over novelty?

In most real scenarios:

• 65” = safe and flexible
• 75” = modern standard
• 86” = professional choice

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FAQ

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Final Thoughts

Choosing the right interactive whiteboard size is not about chasing numbers.
It’s about matching space, usage, reliability, and manufacturing reality.

At Qtenboard, our size recommendations are based on:

• Factory production data
• Long-term usage feedback
• Engineering constraints
• Real-world installation experience

Sometimes, the smartest choice isn’t the biggest one —
it’s the one that works best, every single day.