Due the wide variety of hatch
sizes & shapes, most aftermarket hatch screens are not the fitted insert type that OEM’s offered - but one-size-fits-all tent-type.
Maggie made our hatch screens, but sewing Velcro (the “hairy” Loop part) ribbon around the perimeter of a hemmed screen
, and gluing the hook ribbon around the inside perimeter of the hatch. Worked very well.
A, larger, companionway screen
was made by hemming weights into the upper and lower edge of the screen. The top edge was additionally secured with a bungee cord.
See also Practical Sailor magazine article:
Build Your Own Companionway
Hatch Screens - by Paul Ring
Aftermarket "Tent" type screen