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PermaCast Round Taper Columns

PermaCast® columns are the most used columns in the United States. Made from a proprietary blend of fiber-reinforced polymers, PermaCast columns provide an aesthetically pleasing column with exceptional structural capabilities. This durable and low maintenance column provides a seamless look to the front porch that stands up to the elements like no other product on the market. PermaCast® columns are rot-proof weatherproof, insect proof, and come with a Limited Lifetime Warranty.

Column Sizes & Types

PermaCast Tapered Columns options are available in the sizes below. Reeb does not stock all of these sizes. Flutes are available in every diameter, but may be custom.

Round Plain

Round Fluted


Split Options

PermaCast columns can be split numerous ways to fit the needs of the home. It is important to note that once the column is split, there is no load bearing capacity for the column. There are two options for split kits: a non-flange split kit or a flange split kit. The non-flange split kit includes 43″ straps Adhesive, 4 – Aluminum Plates with screws, and Installation instructions. The flange split kit includes 4 – 4 foot aluminum flange pieces, Screws to install flange, Adhesive, and Installation instructions. Reeb has access do to the “D” cut on the columns, all other cuts need to be factory ordered from HB&G.


Round PermaCast Inside Dimensions

Inside dimension may vary up to 1/8″. Splitting a column will decrease inside dimension 1/8″.

Column Size Top ID Bottom ID
6″ 3-7/8″ 4-7/8″
8″ 5-1/2″ 6-7/8″
10″ 7-3/8″ 8-7/8″
12″ 8-5/8″ 10-7/8″
14″ 10-7/8″ 12-7/8″
16″ 12-7/8″ 15″
18″ 14-3/8″ 16-3/8″
20″ 16-5/8″ 19″
22″ 18-1/4″ 20-5/8″
24″ 20-1/4″ 22-5/8″
28″ 22″ 26-1/2″
30″ 25-1/4″ 28-1/8″
Column Size Bottom Diameter
6 x 4 5-3/8″
18 x 8 17-1/4″
20 x 10 18-11/16″
20 x 12 18-5/16″
20 x 14 19-1/4″
Updated on December 17, 2020

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