Throw distance is the physical measurement from your projector's lens to the surface of your screen. Every projector has a specific "throw ratio" that dictates how large the image will be based on how far back it sits. Here is the quick breakdown:

• Ultra-Short Throw (UST): Sits directly under your screen (inches away). Excellent for living rooms.

• Short Throw: Sits 3 to 8 feet away. This is the sweet spot for golf simulators to keep you from casting shadows on the screen.

• Standard / Long Throw: Sits 10 to 20+ feet away. Built for deep rooms and dedicated home theater builds.

The number one mistake beginners make is mounting their projector too high or too low and relying heavily on "keystone correction" to fix it (which degrades your image quality).

Projectors do not blast light perfectly straight; they shoot light upward or downward at a fixed angle known as vertical offset. When planning your layout, your primary goal should be to position the screen so that your eyes naturally align with the bottom third of the screen when you are comfortably seated.

If you are building an indoor golf or flight simulator, standard home theater rules don't apply. While movies look best in a 16:9 widescreen format, simulator enclosures usually require square aspect ratios like 4:3 or 16:10 to maximize your vertical impact screen space.

Because you will be swinging a club or sitting close to the screen, calculating your shadow-free clearance zone is step number one. You must pair your space with a short-throw or ultra-short-throw projector mounted precisely out of your swing path to avoid casting huge shadows over your virtual fairway.