HS-4N mounting frames ideally suit for building filterwalls for highly efficient particle filtration. Single mounting frames can be fitted like modules to estrablish a wall installation. Clamping elements in each corner of the mounting frame ensure an even pressure on the installed filter. Each mounting frame comes with 4 clamping elements. All weldseams are glas blasted for corrosion protection. HS-4N-Frames can be optinonally equiped with a leaktest pipe to ensure tight seat of the filter by putting the groove gasket (gasket with tight seat test ablility) of the filter under pressure.  The tight seat of the filter is validated by monitoring the leak rate over the gasket.The mounting system supports worldwide standard HEPA sizes.