Break-Apart Tongue & Groove Extrusion with gasket groove.
Board Thickness: 10.3mm / 3/8"
Fits Most Domestic Laminates.
Material: Aluminium 6063-T5
NOTE: Mill finish unanodized extrusions can commonly incur surface abrasions during shipment from rubbing together if they incur harsh handling during the shipment process. This is not abnormal, and is easy to remedy by rubbing the extrusions with some #0000 Fine Grade Steel Wool, cheaply available at any hardware store.
See Parts Pictures Above