A perfectly coordinated, acid-free mat with a unique, playful color gives your photo a contemporary, gallery-worthy look. All our frames are crafted using professional-grade industry materials, including this solid wood moulding, not mass produced retail components. Solid wooden frame (Ayous, made in Italy). 1.4mm pH-neutral Mat Board made in England. Opening sizes: 2x3, 4x6, 5x7. Mat Opening: 3mm-5mm smaller than photo size for secure mounting. Glazing: 2mm Acrylic (default) - Glass (by request) Crescent 2.6mm Backing Board with a water-resistant coating. pH neutral. Sawtooth Picture Frame Hanger included. Custom size available, contact us for the quote. A4 Walnut Picture Frame With Mat Off-Center Opening Size 2x3 4x6 5x7