BLAZE BLZ-20-KAMADO Manuel De L'utilisateur page 13

All outdoor kitchens should have ventilation throughout the island cavity
to prevent a buildup of heat and safeguard any built in gas appliances. 8
inches of space is required behind the grill to allow the grill lid to open
however this dimension will not meet the minimum space necessary for
distances to combustible surfaces.
Do not install underneath a combustible surface. This grill should only be
used in an open air space.
ALL BBQ ISLANDS MUST BE MANUFACTURED FROM "NON-COMBUSTIBLE" MATERIALS
UNAPPROVED COMBUSTIBLE MATERIALS INCLUDE BUT NOT LIMITED TO:
WOOD, GYPROCK, PAPER, PLANTS, CLOTH, RUBBER, PLASTICS, and FIBERGLASS.
Consult your local authority having jurisdiction for further questions.
Blaze Outdoor Products Instructional Book
Page | 13