Spira Brass traditional style Regency Knocker Letter Plate made from solid brass material and a contemporary smooth finish addition to a strong double spring action to avoid plate movement will enhance any solid wood exterior doors with their elegant and sturdy look. This letter plate is finished in polished brass and features external dimensions of 255mm x 76mm, internal dimensions of 195mm x 43mm, and a thickness of 7mm. The distance between screw hole centres is 224mm. Supplied in singles complete with fixings. Please note: We do not recommend pre-cutting of doors as sizes are approximate and may differ from those shown.