Rustic Barn Door or even new long cabinet door

Zinsser BIN Primer

Rust-Oleum's Chalkboard paint tinted to your preference

Wipe off barn door with a mild cleanser allow to fully dry

If leaving the original finish on the frame, paint only the inside of the door with Zinsser Bin Primer allow to dry one hour

Apply two to three coats of Rust-Oleum's Chalkboard paint to the inner rim.

Allow to dry the recommended time and then "chalk" up the board with the long round end of a piece of chalk basically prepping the surface