Optoma
ZH451ST
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Prices confirmed Nov 10, 2026 · we check every retailer daily
On Amazon, check the “Sold by” line: Amazon.com, the brand’s own store, or an authorized dealer. Some makers, Garmin and BenQ among them, can refuse warranty claims on units bought from other sellers.
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Optoma's business-line version of its 0.496 laser short throw: 1080p, 4,200 lumens (ISO 21118), a fixed lens with a 116% offset, a laser rated 30,000 hours, and the same 274 x 216 mm cabinet as the GT2400HDR. A 100-inch image sits about 3.6 ft from the screen, per Optoma's manual. Amazon sells it for $1,499 and Indoor Golf Outlet for $1,699. The GT2400HDR has the same brightness, throw and cabinet for $1,299, so the ZH451ST makes sense mainly when it is the one in stock.
Compare with
How it stacks up against the closest alternatives.
Who this is for
Honest match per persona.
Good for
No specific match.
Not for
- Cost-Effective Buyer
The GT2400HDR is the same 4,200 lumens and the same 0.496 throw for $1,299.
- Performance Seeker
1080p. The GT3900UHD puts 4K on the same throw for $1,499.
- Showroom
1080p and a business-projector feature set for a room built to impress.
Specifications
The numbers, plainly stated.
Image
| Resolution | 1080p (1920×1080) |
| Lumens | 4,200 (ISO 21118) |
Hardware
| Light Source | Laser (30,000 hours) |
| Throw Ratio | 0.496:1 (fixed) |
| Offset | 116% (±5%); no lens shift |
| Dimensions | 10.79 × 8.5 × 4.49 in (W × D × H) |
Requirements
| Throw Distance | 100 in at about 3.6 ft (Optoma's manual) |
Room planner
See the Optoma ZH451ST in your sim room.
The planner draws it to scale with your room and your screen: where it mounts, how far the lens sits from the screen, and whether your swing or your shadow crosses the light. It opens in a sample room; put in yours.
Same category, different tradeoff
Other projectors we considered.
Mid-tierOptomaGT3900UHD4K laser short throw at 4,000 lumens (ISO 21118): the ZK431ST-B's cabinet and lens for less, for screens up to 150 inches.
Mid-tier
Mid-tier
Cross-shop