Patent attributes
A collar positionable about a panel penetrating member for sealing therearound and particularly for firestopping therearound which prevents the flow of smoke and may include an intumescent component for expansion during exposure to heat. A collar assembly is usable with members penetrating various types of panels including walls, ceilings and floors. The sealing member of the assembly includes frangible zones with removable sections which are mated to the construction of the mounting strap. The mounting strap includes engagement prongs and multiple engagement apertures securable with respect to one another in various relative positions for use with respect to panel penetrating members of various standardized sizes. The engagement of the prongs in various apertures is mated with the frangible zones on the sealing member for effective sealing around panel penetrating members of standardized sizes such as 3 inch, 3½ inch, 4 inch and 4½ inch and others.
