XF051-00-B
It can meet the fire requirements stated in SOLAS 1974 and amendments in 1978 and watertigh requirements 0.08MPa.

LxBxR100 clear size	L1xB1xR155 coaming size	L2xB2xR165 opening size	L3xB3xR187 cover size	t cover thickness	t0 coaming thickness	qty of clips
600x600	710x710	730x730	774x774	8	8	8
700x700	810x810	830x830	874x874	8	8	8
800x800	910x910	930x930	971x971	8	8	8
900x900	1010x1010	1030x1030	1071x1071	8	8	8

Note: Coaming height “H” is to be determined by client.
Identification example:
A60 watertight hatch cover, clear size is 600x600mm,t is 8mm, t0 is 8mm:
A60 watertight hatch cover A60 600x600x8-8 XF051-00-B