ViewSonic LS921WU 6,000 ANSI Lumens WUXGA Short Throw Laser Installation Projector
- In UK stock, ships from the UK
- UK manufacturer warranty
- UK-based engineers
- No import duty or customs charges
- GBP pricing, UK VAT invoices
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Description
The LS921WU is the short-throw counterpart to ViewSonic's LS920WU, using 2nd generation laser phosphor technology to deliver 6,000 ANSI lumens and a 3,000,000:1 contrast ratio at native WUXGA (1920x1200) resolution for up to 20,000 hours of consistent brightness. Its 0.81-0.89 throw ratio suits confined installation spaces up to a 200" screen, and wide lens shift (horizontal ±23%, vertical ±50%) combined with a 1.1x optical zoom, H/V keystone and 360-degree projection gives installers flexibility for blended projection in restaurants, gyms and simulation or experience centres, including portrait-mode mounting. Dual HDMI 2.0b (HDCP 2.2) ports support original 4K content with HDR/HLG, and a compact chassis with built-in HDBaseT receiver keeps cable runs simple, ensuring the LS921WU fits neatly into space-constrained, centrally-managed AV installations.
Key features
2nd-gen laser phosphor light source with 20,000-hour lifespan.
Compact installation footprint for screens up to 200".
Simplified cable runs for centrally managed AV systems.
H: ±23%, V: ±50% lens shift plus portrait-mode mounting.
Technical specifications
Throw distance guide
With its 0.81–0.89:1 throw ratio, here's how far the projector needs to sit from the screen for common 16:10 image sizes. Try our throw distance calculator for your exact room.
| Image size | Image dimensions | Lens distance range |
|---|---|---|
| 60" | 1.29 m × 0.81 m | 1.0 m – 1.2 m |
| 80" | 1.72 m × 1.08 m | 1.4 m – 1.5 m |
| 100" | 2.15 m × 1.35 m | 1.7 m – 1.9 m |
| 120" | 2.58 m × 1.62 m | 2.1 m – 2.3 m |
| 150" | 3.23 m × 2.02 m | 2.6 m – 2.9 m |
| 200" | 4.31 m × 2.69 m | 3.5 m – 3.8 m |
Planning from a real wall? Use the projector room planner to upload a photo, preview the image to scale and find projectors that fit within your maximum available space.
Distances are lens-to-screen, calculated from the manufacturer's stated throw ratio; allow for lens shift and mounting hardware. Always confirm against the manufacturer's installation guide before fixing mounts.
See it on your wall, to scale
Choose a picture size, then upload a wall photo—or scan the QR code and take it on your phone. We'll show the projected picture at its real size.
Documents
Frequently asked questions
How bright is the LS921WU and what's it suited for?
It's the short-throw counterpart to ViewSonic's LS920WU, delivering 6,000 ANSI lumens at native WUXGA (1920x1200) resolution with 3,000,000:1 contrast, suited to restaurants, gyms and simulation or experience centres needing a short-throw install.
How close to the screen can the LS921WU be mounted?
Its 0.81-0.89 throw ratio gives roughly 1.7m to 1.9m for a 100" image, with images sized from 60" up to 200".
How long does the laser light source last?
Up to 20,000 hours from its 2nd generation laser phosphor light source.
How much placement flexibility does the LS921WU offer?
It has 1.1x optical zoom, wide lens shift (horizontal ±23%, vertical ±50%), H/V keystone correction, and 360-degree/portrait projection for blended installations.
What connectivity and HDR support does the LS921WU have?
It has 2x HDMI 2.0b (HDCP 2.2) inputs, HDBaseT, RJ45 LAN and RS232 control, and supports HDR10 and HLG.
What warranty and delivery does the LS921WU come with?
It comes with a 3-year warranty and is in stock at TopAV, dispatching within 2 working days. At £2,819.24 inc VAT it qualifies for free standard UK delivery.
Delivery & returns
Estimated delivery 29 Aug - 2 Sept. UK mainland delivery only — some large or made-to-order items may carry longer lead times.
Unused items in original packaging can be returned within 14 days of delivery. Faulty items are covered under manufacturer warranty.
Bought in the UK, backed in the UK
This item is in UK stock and ships to you from within the UK, so the order never crosses a customs border on its way to you.
The manufacturer warranty is honoured here in the UK. If something fails, you deal with us — not with an overseas seller in another time zone.
Our own UK-based engineers install, commission and support what we sell, and can attend site when a system needs hands on it.
Delivered within the UK mainland, so there is no import duty, customs charge or courier handling fee waiting for you on delivery.
Prices are in pounds sterling with proper UK VAT invoices, and purchase orders are accepted from approved education accounts — no currency conversion and no surprises at the door.
Payment & security
Pay securely by card. Education customers can apply for a 30-day purchase order account.
Schools, colleges, sixth forms, universities and multi-academy trusts can order on invoice — no card payment required. Purchase orders and credit terms are for education customers only.
All transactions are processed over an encrypted, secure checkout.
Need help specifying this for your space?
Ask Andrew — he knows the full catalogue and can advise on installation, mounting and compatible AV systems.