Stanchion easily slips out of the weighted base plate for easy transport and storage For Asphalt or Metal Roofs Complies with OSHA’s (Std-29 CFR)(1926.502) (f) Quick set up Priced per stand Recommended spacing: Every 50 ft.Uses: Rooftops, construction sites, parking lots, high rise construction, manufacturing facilities, maintenance contractors, office buildings, amusement parks, airports, warehousesBase = 24" x 24" & 40 lbs. ...