Elmdor/Stoneman Manufacturing is a subsidiary of Acorn Engineering Company that specializes in the manufacturing and distribution of high quality:
Elmdor Access doors provide easy access to components concealed behind a wall. Access doors are manufactured from durable steel for a variety of wall types and applications in commercial and institutional buildings.
Roof flashings are installed on vent pipes where they pass through the roof. Stoneman manufactures roof flashings that fit a variety of pipe sizes for a secure fit.
Roof Access Hatches are designed to provide convenient access to the roofs of buildings, allowing for ladders and stair access to the roof from the interior of the building. Elmdor Roof Access Hatches are designed and engineered for durability and safety, with ease of installation. The Roof Access Hatches install easily over the roof opening and are secured from the base flange to the roof.
Trisolators serve a variety of functions for piping support, including preventing the transmission of sound, absorbing vibrations, preventing electrolytic action, cushioning the piping and preventing the support from damaging the piping.