A pipe support is coupled to an elongated channel for receiving and supporting a pipe. The channel includes a base and a pair of spaced apart sidewalls extending from the base to a bottom plate. A flange projects downwardly from each top plate towards the base and defines a slot therebetween. The pipe support includes a body portion extending axially between opposite ends and having an inner surface and an outer surface. The body portion includes a generally arcuate bottom floor and a pair of spaced apart sidewalls projecting generally upwardly from the bottom floor. A pair of axially spaced apart channel locks projects downwardly from the outer surface of the body portion adjacent each of the spaced apart sidewalls of the channel. A retainer strap selectively connects to and between the channel locks for coupling the pipe support to the channel.