A0級 防火窓（客船、フェリー用） A0 Class Fire-resistant Windows(For Passenger Ship,Ferry)
Side Scuttles Welded Type
| Maximum Size | Type | Plate Cut Size |
| ø400 | KKS-A0-08 | ø472 |
Rectangular Windows Welded Type / Bolted Type
| Maximum Size | Type | Plate Cut Size |
| 1500 × 1500 | KKS-A0-11 | 1572 × 1572 × R77 |
Rectangular Windows Welded Type / Bolted Type
| Maximum Size | Type | Plate Cut Size |
| 1400 × 1200 | KKS-A0-12 | 1472 × 1272 × R126 |
A60級 防火窓（LPG、LNG、タンカー用） A60 Class Fire-resistant Windows(For LPG,LNG,Tanker)
Side Scuttles Welded Type / Bolted Type
| Maximum Size | Type | Plate Cut Size |
| ø400 | KKS-A60-01A | ø454 |
Rectangular Windows Welded Type
| Maximum Size | Type | Plate Cut Size |
| 1500 × 1500 | KKS-A60-AH3 | 1516 × 1516 × R27 |
Rectangular Windows Welded Type / Bolted Type
| Maximum Size | Type | Plate Cut Size |
| 1500 × 1500 | KKS-A60-AH2 | 1572 × 1572 × R77 |
Rectangular Windows Bolted Type
| Maximum Size | Type | Plate Cut Size |
| 800 × 800 | KKS-A60-FL1 | 813 × 813 × R77 |