Heavy duty clear plastic humidity domes for the GS812 Perma-Nest tray (not included). Covers are 3" high and two to three times the thickness of other domes. Will last for years with proper storage. Protect delicate seedlings and provide consistent humidity. For ventilation, drill or punch holes in ridge at top of the dome.

DIMENSIONS: 8" X 12" X 3" FOR 8" X 12" TRAY

Renamed part number. Previous part number GD812