GA18SS 18' Solid Side Wall. (sectional- 12' wall with a modular interlocking 6' wide panel). The same as the 14' solid side wall shown except the main stall panel is 12' wide with a 6' modular extension panel. 6' modular extension panel can be mounted on right or left. 3 section minimum order for free freight to a business address (2 fronts and 1 side wall for example are 3 sections) GA18SS$745.00 CMI products toll free order and help line 1-800-335-1880. OHIO RESIDENTS will be charged Ohio Sales Tax unless we have a OHIO SALES TAX EXEMPTION FORM on file. The form is available at the link on the left side of this page.