- Distance between bolts: 100mm
- Distance between top bolt and door viewer hole: 40mm
- Door viewer hole size: 12mm
- Door knocker height: 160mm
- Door knocker width: 72mm
- Door knocker thickness: 12mm
Bolt fix and hidden fix systems in one product, Hidden fix option is 1 Hour Fire Rated, Classic Victorian style look, Easy to cut flexi nylon bolts will never rust, Comes with colour matched nuts and washers, Patented unique hidden fixing mechanism, When using the self-adhesive fixing it is possible to take the door knocker back off the door with relative ease using a stanley knife, Waterproof seal stops rusting behind the door knocker, Engravable area if needed for logos, text and numerals etc, Silver Anodised and Gold Anodised finishes incorporate a spirit level.