Crafted from flame-resistant, black recycled post-manufacture PVC, AccuVents Cathedral Starter Baffle Vent is both eco-friendly and highly durable. The starter element of the baffle is what differentiates it from other venting systems, providing a foundational piece to connect additional baffle segments. The Cathedral Starter Baffle Vent is designed for easy installation and lasting performance, making it an ideal choice for homes with vaulted ceilings.