This Listing is for a 12" Round Acrylic Prismatic Globe for post top fixtures.  This is a very unique, different globe with a prismatic look.  This is a great globe if you want to be different than everybody else's white round globe in the neighborhood and it emits more light from your light source because of the primatic style lines.  The prismatic lines are running vertical on the globe. The globe measures 11 1/8" before the neck and 12" including neck.  The necks outside diameter measures 3 7/8"  and measures 3 1/4" inside diameter.  These globes are meant to fit on a  4" fitter or ring secured with set screws.   Please check your fixture or existing globe for reference.  Acrylic is the type of material that they are made of.  These globes are absolutely UV stabalized and resistant to UV rays.  Acrylic is a material resistant to weathering and aging and has an exceptional brilliance.  The shine does not diminish even after prolonged use, thanks to an optimum surface hardness.  If you have any questions or concerns, please feel free to ask.  Please make sure that you are buying the correct globe size and neck size before paying. Returns are accepted within 14 days of receiving the item.  Item must be returned in the same condition it was shipped.  Buyer to pay for shipping to and from.   No International shipping.  Will only ship to USA 48 States, sorry Alaska and Hawaii.  Paypal only is accepted for payment. Texas customers pay 8.25% tax.   Thank you for looking!