Mack Industries Approved Headwall Designs
**Click on Desired Size For use with Corrugated Metal Pipe For use with Reinforced Concrete Pipe
4A-18" 4A-21"
4A-24" 4A-27"
4A-30" 4A-33"
4A-36" 4A-42"
4A-48" 4A-54"
4A-60" 4A-66"
4A-72"
4B-18" 4B-21"
4B-24" 4B-27"
4B-30" 4B-33"
4B-36" 4B-42"
4B-48" 4B-54"
4B-60" 4B-66"
4B-72"