Each painting 4" (L) x 6" (H) is securely matted between a 8" x 10" white thick boards, so depending on your preferences, you can either obtain a 4" x 6" frame, or a 8" x 10" frame. 

Finding the right frame can be challenging. I've personally sourced frames from Urban Outfitters, West Elm, and Pottery Barn. If you are looking for something custom-made, I would recommend checking your local frame store. Alternatively, the online shop simplyframed has something great options.