3-1/2 in D, octagon concrete boxes with (8) 1/2 in and (8) 3/4 in side knockouts are used in poured concrete construction. They are installed on wooden or steel concrete forms, once the forms are removed the boxes and conduit are buried in concrete and the end is open to the room wall or ceiling, ready for wire pulling. Garvin Industries extra long external mounting tabs allow an easy installation by nailing or screwing the boxes to wooden or steel concrete forms. Knockouts are sealed against box surface to prevent concrete slurry and water from entering the box. The top covers are removable allowing any before-pour work.

GARVIN® Concrete Slab Box, (8) Side Knockouts, (8) 1/2 to 3/4 in Side Knockout, Octagon Shape, Steel, Zinc Plated, 5.13 in W x 3.5 in D Dimensions

• https://externalassets.unilogcorp.com/ASSETS/DOCUMENTS/ITEMS/EN/GARVIN_OCR-350_Line_Drawing.pdf https://www.iesbuy.com//ASSETS/DOCUMENTS/ITEMS/EN/https://externalassets.unilogcorp.com/ASSETS/DOCUMENTS/ITEMS/EN/GARVIN_OCR-350_Line_Drawing.pdf
• VIDEO LINK https://youtu.be/p9do7vUJExI
• https://externalassets.unilogcorp.com/ASSETS/DOCUMENTS/ITEMS/EN/Southwire_56823301_Warranty.pdf https://www.iesbuy.com//ASSETS/DOCUMENTS/ITEMS/EN/https://externalassets.unilogcorp.com/ASSETS/DOCUMENTS/ITEMS/EN/Southwire_56823301_Warranty.pdf

• Extra long external mounting tabs allow for easy installation
• Top cover is removable allowing any before-pour work