 ManholesOur complete line of manholes includes structures up to 144" in diameter, constructed in accordance to ASTM C-478. With a large standing inventory and two coring machines, we can customize our standard inventory to your job specifications with minimal lead-time. Our trained staff can provide both take-offs and project estimates. Kor-n-seal boots and pre-channeling are available. Choose from the list below to view PDF files: |