THIS IS A SMALL BIT VERY CUTE BRASS LETTERBOX IN BARE UNLACQUARED BRASS. THE DIMENSIONS ARE AS FOLLOWS. WIDTH 14 CM BY 5.5 CM. THE OPENING APERTURE MEASURES. 11 CM BY 2.5 CM. THE OPENING APERTURE WORKS WITH A WEIGHT ON THE REVERSE SEE IMAGES. THE DISTANCE BETWEEN THE FIXING BOLTS MEASURES 12.5 cm. THIS LETTERBOX IS IN BARE UNLACQUARED BRASS WHICH MEANS IT WILL DARKEN WITH USE AND AGE BUT CAN EASILY BE CLEANED TO BRING IT BACK TO THIS FINSIH. THIS IS A LOVELY QUALITY SMALL LETTERBOX. THANK YOU FOR LOOKING.