Custom Plastics 41 Colonial White Plumbing VentPlumbing vent cap made of polypropylene. Overall diameter 5-1/4". Assembled height 3". Fits 1-1/4" to 1-1/2" vent stacks. Base and cap are included together. Color: Colonial WhiteFeatures of Custom Plastics 41 Colonial White Plumbing Vent Product Type :Auto Accessory | Package Dimensions :9.32" L X4.87..