The Low & Medium Profile Hatches changed from Mk1 to Mk2 version between July and December 2000. On Mk1 hatches a roll pin is visible on the underside of the lid near the hinge. There is no roll pin on Mk2
- Produced 1998 - now
- Replaceable acrylic panel
- Small handles bonded on
All Low & Medium Profile hatches have a lens code
- Standard sizes of Mk1 hatches have a code that starts 399
- Standard sizes of Mk2 hatches have a code that starts A399