| depth (mm) | 545 |
| Width (mm) | 1443 |
| Height (mm) | 1180 |
| Weight (kg) | 212 |
| Sound board material | Resonance spruce wood |
| Active area of soundboard (m²) | 1,0605 |
| Ribs (number, shape) | 9, spherical |
| Soundboard construction | wedgewise tapered 9 mm in upper section – 7 mm in lower section |
| Cast iron plate | Wet sand casting |
| Surfacing of iron plate | nitrocellulose paint with bronze dust added |
| Pin block – material | Multiplex beech plywood, density 800 – 850 kg/m3 |
| Wooden frame construction, material | beech, frame construction |
| Cut off bar (corner cross rib) – material, number | beech, 1 |
| Cabinet material | MDF, plywood, solid wood |
| Bridge – treble | beech wood |
| Bridge – bass | beech wood |
| Bridge pins | steel – round tips |
| Agraffes material – number | brass, 88 |
| Strings – material | steel wire Röslau Germany, copper winding Degen Germany |
| Hitching of plain strings | double |
| Dampers – number | 1 – 70 |
| Pedals | left – Piano pedal, midle – Muffler (moderator) pedal, right – Forte pedal |
| Castors | no |
| Felts colour | red |
| Hydraulic slow close fallboard mech. | yes |
Petrof 118 S1
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