Rolling steel doors consist of metal slats that roll up to store in a coil above the door opening. Rolling doors are also called overhead coiling doors or service doors. You can purchase rolling doors in standard sizes, or you can custom order your door. You can use rolling steel doors for added security, as the steel they are made out of can withstand a lot of impact without being damaged. Rolling steel doors can also be made up of slatted grilles or insulated steel.
Prepare the rolling door jambs. Inspect them to see if they are the proper dimensions. They need to be 1/4 inch or larger in diameter and made out of ASTM A-307 grade steel. Drill three holes in the jambs for the door brackets. Drill the first hole at 2 inches above the top of the door frame, the second at 4-3/8 inch above the first hole, and the third 3 inches above the second hole. Secure the door brackets to the door jambs with 3/8-inch nuts and bolts.
Place the sprocket of the reduced drive system on the side of the door assembly that you want it to be on. Secure it in place by driving three 3/8-inch-by-1-inch bolts into the door frame with an electric screwdriver. Use the master-link to wrap the drive chain around the sprockets. Slide the axle saddle over the axle. On the opposite side of the chain hoist slide the saddle with attached tension device onto the axle.
Set the protective material provided with the door down inside of the structure where the door is to be installed. Make sure the door remains rolled, and place it on the interior side of the door frame with the bottom assembly facing outside. Insert the door as close as possible to the header, giving it enough room to rotate and clear the bottom bar.
Hoist the door up over the mounted brackets with a forklift or block and tackle. Pad the forks of the forklift to protect the door from damage. Place the door on the brackets in a position that has the tensioner and the axle saddle resting safely on the top flange of the bracket. The tensioner and axle saddle have arrows on them that will point to the proper direction. Center the door so that it has 3/8-inch clearance on either side of the door. Bolt the saddle according to the manufacturer's instructions, as the height of the door determines where it is to go to safely hold the door up. Fasten the tensioner and axle saddle to the bracket with four 3/8-16-by-1-inch hex bolts.
Install the door guides loosely to allow for adjustment. Make sure there is 3/8-inch clearance for the side of the door. Use the provided masonry clips or anchors if you are mounting them to masonry. Align the clips or anchors with holes on the long side of the guide so that they are flush with the back of it. Install the track bolts, nuts and door stops loosely. Use the two lower holes of the top stops if you are going to put exterior door handles on the door. Use the two upper holes if you are not. Make sure that you put bolts in the same set of holes for each door stop. Bend out the guide tabs 1/4-inch.
Stand on the interior of the structure. Place your hand on the top of the door and push away the rotating door nest away from you. Rotate the door twice, completely around the door roll. Hold onto the bottom assembly of the door and cut the steel bands. Feed the door curtain into the guides, moving the door stops to allow the bottom bar of the door to move past them. Pull down the door's bottom assembly until it is waist level. Attach the keepers to the bottom interior edge of the door with the provided 1/4-inch carriage bolt and nut. Tighten the door stop bolts to secure them in place.