Patent ID: 7832166

Claim:
A fire rated door comprising: a first routable door-sized panel; a second routable door-sized panel; wherein a back of the first routable door-sized panel is attached directly to a back of the second routable door-sized panel using an adhesive; two longitudinal interior channels formed by opposing longitudinal interior channels cut within the back of each door-sized panel; a spline disposed within each formed longitudinal interior channel; a perimeter channel cut in each side of the door; an intumescent banding material disposed within each perimeter channel; an exterior banding disposed within each perimeter channel to conceal the intumescent banding material; and wherein the fire rating for the door is achieved without a mineral core disposed between the first routable door-sized panel and the second routable door sized panel by (a) the intumescent banding material and (b) one or more of the following (i) the adhesive is fire resistant and (ii) the first routable door-sized panel and the second routable door-sized panel contain an intumescent or fire resistant material, or are coated with the intumescent or fire resistant material.