WallMax® Round frames are designed specifically as pipe transit solutions.
The two-part structure is pre-assembled with a special, single-opening round module that accommodates and seals the passage of one pipe only, each model with a different range of diameter openings.
WR frames can be completed with sleeves to secure pipe passages, where bolts on the frontal flange allow to seal the path of the pipe. Sleeves are sold as accessories and are available for each size of the WR.