Sizes up to and including 48 x 60 are rated 2 or 3-hours.

Six (6) inch slab thickness is required to achieve a 2-hour fire rating.

Eight (8) inch slab thickness is required to achieve a 3-hour fire rating.

Installation shall be in accordance with manufacturer's instructions.

Manufacturer shall guarantee against defects in material and workmanship for a period of five years.

Five year guarantee.