This durable non-penetrating roof mount can be assembled quickly, with a minimum of bolted connections. Can be used with communicaiton antennas and microwave dishes. The angle steel frame provides sufficient room to hold up to eight concrete blocks._x000D_  _x000D_  Features:_x000D_  - Will not penetrate roof surfaces_x000D_  - Galvanized for corrosion protection_x000D_  - Designed for concrete block ballast_x000D_  _x000D_  Ventev mounts are covered by the company's 1-year warranty._x000D_  _x000D_  For questions or to purchase product contact Ventev at 800.851.4965 or sales@ventev.com