3298 round ceiling diffusers products are offered for sale by suppliers on Alibaba.com, of which registers & grilles accounts for 41%.
A wide variety of round ceiling diffusers options are available to you, such as bedroom, residential and air conditioner.You can also choose from no, yes round ceiling diffusers,as well as from plastic, die-cast aluminum, and aluminum round ceiling diffusers,and whether round ceiling diffusers is white, or black.