Ian & Duane,
Save yourselves $1000 or $270 per hatch and make your own screens. We fabricated these out of starboard and glued mesh onto them with a hot-glue gun. They can be deployed from inside or outside the boat. They drop into and rest in the hatches. Very easy and cheap to make.
With best regards,
Sailing Vessel - Cream Puff - SM2K - #275
Currently cruising - Guadeloupe