Abstract: A honeycomb grilled conduit is constructed of a channel having a pair of spaced-apart sidewall portions defining a channel opening with a honeycomb grill extending across the channel opening between the outer edges of the sidewall portions. The honeycomb grill of the conduit is raised outwardly of the edges of the sidewall portions so as to provide between the honeycomb grills of adjacent conduits an open flow area for the flow of the drying medium so as to provide a continuous drying surface.

Abstract: An open meshwork, hollow cylindrical roll which may be up to thirty feet in axial length and up to sixteen feet in outside diameter has alternate axially-extending, straight and undulated strips of thin material supported in radial grooves in a pair of opposite end rings. The straight strips are imperforate, planar and of substantial width, and the undulated strips are narrow and comprise an inner strip extending between the lower portions and an outer strip extending between the outer portions of each pair of adjacent straight strips. The undulations are V-shaped with at least half of each apex cut away for welding.