Having proper ventilation and drainage in your lab or facility is a critical part of maintaining a safe and efficient work environment. Certified Material Testing Products carries a variety of vent flashings and drains to keep your facility well-ventilated and free of clogs. View all of the Thunderbird brand vent flashings and drains available in our wide selection, or find any of the other lab testing equipment in our general lab category. Have questions? Contact us today to get all the information you need.