Abstract: Apparatus for securing glass panels in fire barriers comprises an elongated glazing strip made of layers of sheet material adhered together. The sheet material is formed from a slurry mixture of wood fibers and a fire retardant chemical by the use of heat and pressure. The panels are also preferably secured by metal clips having a flat base of thin sheet material and upstanding, elongated projections from the base that are parallel to each other and spaced apart by a distance corresponding to the width of the glass panel to be secured. This arrangement makes it possible to locate glass panels in fire barriers without substantial reduction in the ability of the barrier to contain a fire.