Sold as 1 Each. 4" white hood, pipe & collar. Assembled. Removable built-in bird rodent guard for easy cleaning with tools. The Supurr Guard Louvered Vent Hood from Deflecto is a 4 in. white hood, pipe and collar that comes assembled. It includes a removable built-in bird and rodent guard for easy cleaning with tools. The vent hood also includes a lifetime guarantee. 4" white hood, pipe collar. Assembled. Removable built-in bird rodent guard for easy cleaning with tools.