Dome sizing guide
Use the full sizing walkthrough to match quarter, half, and full domes to the installation footprint.
Quarter dome dimensions
Dome Mirror Sizing FAQ
Clarify full, half, and quarter dome sizing so ordered dimensions match installed expectations.
Category resources
Use the guide and category links below to keep this FAQ topic connected to the matching product and buying pages.
Browse dome mirrors
See stocked dome products after confirming the installed dimensions.
Convex vs dome guide
Double-check whether the application really needs dome coverage before ordering by size alone.
sizingHow are quarter dome mirror sizes measured?
Full and half dome mirrors are sized by the diameter of the original full dome. Quarter domes are based on that same full dome diameter, so the straight edges of a quarter dome are roughly half the listed size.
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educationWhy does my quarter dome mirror look smaller than the size I ordered?
A quarter dome uses the radius of the original full dome as its straight-edge measurement. For example, a 32 inch quarter dome will have straight edges of about 16 inches because it is one quarter of a 32 inch full dome.
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