Saloon Café Swinging Door,Indoor Premade Cowboy Bar Half Waist Swing Door Auto Close Stainless Steel Hinges,Wooden Kitchen Restaurant Porch Partition,Custom Color Size (W 41in x H 39in) - Amazon.com
EZ-Door 1/2 in. x 19 3/4 in. x 36 in. Unfinished Casing Kit (1-Piece − 3 Total Linear Feet) EZD-FR-30 - The Home Depot
Royal Building Products 7241 1-1/4 in. x 6-9/16 in. x 84 in. White PVC Door Jamb Frame Kit 0724117005 - The Home Depot
How to install a door/frame in this arched doorway? : r/howto