Ionic Order (Attic) Base Molding / Plinth - [NON-VENTED] - Sits Under a Round, Wood Load-Bearing Column Shaft - [Fiberglass Composite Material]

   ITEM #:      BP-06-ARCH-ATC-PMC-A-9

  • Interior replacement load-bearing Ionic Order (Attic) base molding and plinth
  • Interior replacement load-bearing Ionic Order (Attic) base molding and plinth
  • Paint-grade interior weight bearing Attic column base from Brockwell Incorporated
  • Interior load-bearing primed & painted Attic Base Molding & Plinth
  • - Brockwell Incorporated's Finished Structural Interior Attic Base Design for Purchase
  • Brockwell Incorporated's Structural Interior Attic column base for wood columns
  • Round interior load-bearing Attic Base molding & plinth for wood columns
  • Durable fiberglass composite load-bearing interior Attic base for wood columns
  • Fiberglass composite Ionic Order (Attic) base moldings & plinth for interior wood columns
  • Structural fiberglass composite Attic base that sits underneath interior wood columns
  • Architectural fiberglass load-bearing Attic base for interior wood column shafts
  • Brockwell Incorporated's interior fiberglass structural Attic base design for wood columns
  • Structural fiberglass non-vented Attic replacement base at

Ionic Order (Attic) Base Molding / Plinth - [NON-VENTED] - Sits Under a Round, Wood Load-Bearing Column Shaft - [Fiberglass Composite Material]

   ITEM #:      BP-06-ARCH-ATC-PMC-A-9


DESIGNED for use with a load-bearing interior wood column.
PHOTOS show examples of our bases that are both finished & unfinished.
THIS product is "Made to Order."  Returns & Refunds cannot be accepted.
MAY have up to 1/8'' dimensional variance.
LEAD TIME:  Contact a Brockwell Sales Associate for up-to-date lead times.
See the product drawing with dimensions as a .pdf Read Brockwell Incorporated's Installation Instructions & Tips Read Brockwell Incorporated's Product Warranty Information


NON-vented  /  for INTerior use  /  fluted OR plain SHAFTS  /
base sits underneath column shaft & does add height
/   load-bearing   /

Load-Bearing Non-Vented Attic Base Dimensional Drawing - Brockwell Incorporated -


   A       B       C       D   
6" 6'' 8-7/16" 2-7/16" 1-1/2"
8" 8'' 10-15/16" 3" 1-7/8"
10" 10'' 13-1/2" 3-3/4" 2-3/8"
12" 12'' 16-1/8" 4-1/2" 2-3/4"
14" 14'' 19" 5-5/16" 3-5/16"
16" 16'' 21" 6" 3-7/8"
18" 18'' 24" 6-11/16" 4-3/16"
20" 20'' 26-1/2" 8-1/8" 4-3/4"
22" 22'' 30-3/8" 8-7/8" 5-1/4"
24" 24'' 32" 9-5/8" 5-5/8"
28" 28'' 38" 11-3/8" 6-3/4"
36" 36'' 48" 13-1/2" 7"


 COL. SIZE = bottom diameter of column shaft

    * ACT. DIAM = overall diameter of load-bearing surface

    * Dimensions may have up to 1/8" + / - variance

  |  This base is cast with a fiberglass composite material, which includes a mixture of polyester resin and fiberglass that is reinforced with a polymer composite material.  It is heavier and more durable than polyurethane, and is perfect for replacement applications.  Brockwell fiberglass composite bases are designed to perform well in any climate type. 

PAINT-GRADE.  This column base design has a plinth that is NON-VENTED, and is intended for INTERIOR use with a structural wood column.

SELECTING YOUR BASE STYLE |  Brockwell adheres to and recommends utilizing the appropriate base style according to the Classical Orders of Architecture.  An easy way to determine which base is classically correct for your project, simply follow this format:

I F  Y O U  H A V E  A:
Tuscan capital = a Tuscan base
Roman Doric capital = either a Doric base or an Ionic ("Attic") base
Decorative capital = an Ionic ("Attic") base 
Greek Doric columns = No Base

This base is meant to be installed underneath an existing wood column shaft and is Weight-Bearing.  It sits under the column shaft as a structural component, and it will add to the overall height of your column.

   NOTE:     Our product photos show both the finished (primed & painted) look of our base molding & plinth and the unfinished look of our base molding & plinth.  These are actual product photos.

Simply select the Base Size from the drop down box above, and 'Add to Your Cart' for a seamless online ordering experience.

  • Great for Interior applications
  • Primes & Paints well
  • Heavier, durable material
  • Load-Bearing / Structural
  • Great for replacement bases
  • Available in many sizes
  • Available in the Classical Orders
  • Designed for wood columns
  • Adds historic value to your project
  • These bases are paint-grade
  • For residential & commercial projects
  • We ship directly to you
  • Has a Lifetime Warranty
  • Made in the United States  made in the united states icon



Includes Info About:

  • Freight Information
  • Residential Delivery
  • Commercial Delivery
  • Product Arrival
  • Missing Product(s)
  • Visible Damage
  • Concealed Damage
  • C.O.D.
  • Lead Times

* This Shipping Rate chart reflects Standard Ground Shipping costs.  NOTE:  Some of our items require "Oversized" packaging and shipment via Common Carrier (LTL).  We will contact you soon after you submit your order to inform you of any additional shipping charges.

$170.00 - $275.00 $20
$275.01 - $400.00 $25
$400.01 - $525.00 $35
$525.01 - $775.00 $40
$775.01 - $1,000.00 $75
$1,000.01 - $1,525.00 $125
$1,525.01 - $2,075.00 $175
$2,075.01 - $2,500.00 $225
$2,500.01 - $3,025.00 $275
$3,025.01 - $3,575.00 $325
$3,575.01 - $4,000.00 $375
$4,000.01 - $4,525.00 $425
$4,525.01 - $5,000.00 $475
$5,000.01 & Above $550

   QUESTIONS ?        EMAIL US    |       980-282-8383


  For Signed Purchase Orders:   Before you send back your signed purchase order (quote), you must make any and all changes.  We highly encourage you to thoroughly inspect the details of your quote before signing off on it and returning it back to Brockwell Incorporated.  Two-way communication is important.  Orders cannot be changed or cancelled without a charge after your signed quote is returned to us.  Cancellation charges may vary depending on whether or not your order has been started and/or materials have been ordered for your project.  This may require full payment.  After shipment, orders cannot be changed or cancelled.

  For Online Orders:   Orders may be cancelled at any time prior to the shipment of your products, but must be submitted to Brockwell Incorporated in writing.  Cancellation charges may vary depending on whether or not your order has been started and/or materials have been ordered for your project.  Order cancellations after an order has already been started may still require full payment.  Please get in touch with a Brockwell sales associate.  Order changes / updates cannot be made after our production team has started making your order.  After shipment, orders cannot be cancelled.
Brockwell Incorporated reserves the right to cancel your order at any time.  If for some reason we must cancel your order, you will be notified, and if we initiate the cancellation – you will not be charged any fees.

Many of our products are considered to be “Made to Order,” signifying a custom product.  These products are non-returnable and non-refundable.  Upon delivery of your product(s), please inspect them thoroughly for any damage.  In the case of damage, visible or concealed, please note this on the freight paperwork before signing it.  If the product is damaged, please write on the paperwork, “Damaged – Return to Sender” and notify us within 48 hours (business days) of discovery.  We reserve the right to void any fees if there is failure to contact us within the above time frame.  We reserve the right to not accept returns after 30 days of receipt of your products.  Please do not return any products until we pre-approve the return, unless you are refusing damaged shipment.  You are responsible for all return freight / shipping charges.

For our products that are Stock and are returnable, we charge a 25% re-stocking fee for any reasons other than damage or product defect. Please do not automatically return your products.  We will first issue you a Return Goods Authorization (RGA) number that you will need to include on your return.  Please clearly write the RGA number on the outside of the boxes you are returning.  All products must be returned in their original packaging and received in good/re-stockable condition.  You are responsible for all return freight / shipping charges.  Once our production has deemed your returned products to be in re-salable condition, we will issue you a refund.  Custom or altered products are non-returnable and non-refundable.

Thank you again for working with Brockwell Incorporated.  We appreciate being a part of your project, and we wish you the utmost success with your projects.  If you have any questions about our above Cancellation/Return Policies, please contact a Brockwell Incorporated associate, and we would be happy to discuss any and all questions you may have.
Custom Architectural Products for Custom Architectural Projects - Brockwell Incorporated -
does your project call for custom products ? 

WHETHER YOUR PROJECT is small or large, we are here and happy to assist you throughout the entire custom ordering process.  Let's start with a thorough discussion about your project's details, product requirements, and how we can help you achieve timeless beauty.  To receive a formal quote for custom products, please contact a Brockwell Sales Associate or Submit Your Plans for one of our experienced associates to review.

OUR COMPANY RECOGNIZES, in today’s architecture, that the realization of one’s classical vision may be delivered in more ways than once thought possible.  Products engineered with the latest technologies & materials, computer generated models, and 3D printing are breathing a new life into customary designs.  We strive to hold to the old while embracing the new.  As such, Brockwell is capable of providing you with custom products that match your specifications in numerous material options. 

Also, in an effort to make receiving formal product pricing easier and more seamless, we have created specific product Request A Quote forms.

Brockwell Incorporated custom products tailored to your specifications blue header

We take pride in producing fine custom products, such as:

  • Columns
  • Column Components
  • Balustrade Systems
  • Decorative Moldings
  • Cornices
  • Pediments & Entryways
  • Entablatures
  • Doors
  • And many more architectural components.
   MATERIAL EXAMPLES:     Wood (multiple species), Fiberglass, FRP, Composites, Polyurethane, Expanded Polystyrene (EPS) & more.

Project types, among others, include:

  • Residential
  • Commercial
  • Historic Preservation
  • Film & Television
  • Institutional
  • Government
  • Hospitality
  • Religious



Brockwell Incorporated is proud to be affiliated with the following organizations.

DMG Architectural Specialists, LLC - Brockwell Incorporated AffiliateNational Association of Home Builders (NAHB) - Brockwell Incorporated Affiliateold house journal online affliate of brockwell incorporatedbuilder magazine online affiliate of brockwell incorporated