Hemisphere is 18″ in diameter at the base not including the flange.
Buy 6 or more for a 10% discount!
(price updates in cart)
Please choose your flange width from the dropdown below.
The flange width has no impact on the size of the dome.
Our stock plastic hemispheres are fabricated from 1/4″ thick, clear acrylic. As the plastic is stretched to make the hemisphere, the leading edge of the hemisphere will shrink to about 3/16″ thick, and the apex (top) may be as thin as 1/16″. Hemispheres ordinarily come with a 1.5″ flange. Therefore, a 12″ hemisphere with a 1.5″ flange would have an overall outside diameter of 15″ (4″ hemisphere comes with 1/4″ flange). We can custom size your flange or ship the hemisphere without a flange. Please specify when placing your order. If you are planning to make your hemispheres into a sphere or globe, please let our salespeople know in advance or visit our plastic spheres page for more information.
For orders of 25+ hemispheres, please call us at 909-930-5535 for the lowest pricing on both the hemispheres and shipping.
|Dimensions||20 x 20 x 20 in|
No Flange, 1/2" Flange, 1" Flange, 1.5" Flange