NAAMS Stack Risers

NAAMS stack risers are constructed from ASTM A-36 steel and are available in sizes ranging from 150 mm (ASR115) up to 800 mm (ASR280). The ASR115 to ASR150 models feature a base measuring 195 mm in length, 170 mm in width, and 20 mm in thickness, while the riser plate is 15 mm thick with dimensions of 140 mm by 110 mm. Standard NAAMS riser heights start at 150 mm and increase in 50 mm increments up to 500 mm.

The ASR240 and ASR280 stack risers serve as base risers for the ASR115 to ASR150 series, offering a larger base (215 mm long by 190 mm wide) and an expanded riser plate (195 mm long by 170 mm wide).

All stack risers are American-made and manufactured in-house, adhering strictly to NAAMS standards and tolerances. As an ISO 9001:2015 certified supplier, we ensure consistent quality—browse our full selection below and purchase with confidence.