MUJI Acrylic Picture Frame Large, for B2 size (approx. 515 x 728mm) [Set of 2]. I have been using these at home. The following is a product description: ****************************************** This is a wall-mounted photo frame that utilizes transparent acrylic panels. It's a versatile B2 size and can be used vertically or horizontally. (Usable size: approx. 515 x 728mm, frame outer dimensions: approx. 585 x 800mm, weight: approx. 2.8kg) Thank you.