The Mesh Chair / Dolbe is used for welded mesh in concrete slabs, mainly for compression slabs. For an ideal installation, the cylinder should be installed in the four way crossing. This chair has a 1" coverage with a max bar #1. This chairs max mesh is 6 to 10. This chair has a 2-3/8" base. The Mesh Chair is available in 50 and 500 piece bags. Universal Dolbe Application. The Mesh Chair is environmentally friendly, "green", made of recycled plastics.