The covers shown above are two (2) piece units..the rear section sleeves into the front section (you must make sure that the rear section is seated into the sleeve)...then use set screws to secure..
All legs must be securely clamped or bolted to the corral using two (2) panel clamps to attach each leg to the corral..If for some reason the leg will not line up with a vertical (upright) on the corral, then you can drill through the top rail of the corral and the leg; drill through the bottom rail on the corral, and the leg, and secure the leg to the corral by using long bolts with washers ,and a nut tightened securely.
All legs must be securely clamped to the cover frame using two (2) panel clamps per leg...
If you have a cover with a truss "the leg goes directly under the truss" ( the truss sits on top of the leg ); and attaches to the bottom of the truss as described above (2 clamps to attach to the corral, and 2 clamps to attach to the cover frame)...Take care to tighten all clamps, bolts, etc and check these fittings periodically to make sure that they are in good condition and have not loosened up over time....
When you place covers over corrals THE CORRALS MUST BE SECURED TO THE GROUND to avoid the possibility of kiting in strong wind conditions...
(these covers have not been engineered for snow load...it is the purchasers responsibility to comply with any and all state, county, and city requirements...)