All of these blinds are of heavy construction, having top and lock rails about the same width as the stiles, and bottom rails about double width. Except for heavy louvers instead of panels, they are much like shutters. The frame is of the same thickness, with mortise and tenon joints doweled together. A picturesque feature of Philadelphia window treatment is the quaint wrought-iron fixtures with which shutters and blinds are hung and fastened. As clearly shown by the accompanying detail photograph of a window of the Morris house, outside shutters are generally hung by means of hinges to the frame of the window. As these frames are set back in the reveal of the masonry, these hinges are necessarily of special shape, being of large projection to enable the shutters to fold back against the face of the wall. They were strap hinges tapering slightly in width, corresponding in length to the width of the shutter and fastened to it by means of two or three bolts. Small pendant rings on the inside of the meeting stiles were provided for pulling the shutters together and closing them. They were fastened together by a long wrought-iron strap, usually bolted to the left-hand shutter, that projects to overlap the opposite shutter five or six inches when the shutters are closed. Near the projecting end of the strap a pin at right angles to it sticks through a hole in an escutcheon plate in the lock rail of the opposite shutter, and an iron pin, suspended by a short length of chain to prevent loss, is inserted through a vertical drilling in the pin. Later, sliding bolts were used, as seen on the shutters at Number 128 Race Street and the blinds at Number 6105 Germantown Avenue, Germantown. Shutters and blinds were held back against the face of the wall in an open position by quaint wrought-iron turn buckles or gravitating catches and other simple fasteners. That on the shutters of the Perot-Morris house is the most prevalent pattern. The scroll at the bottom is longer and heavier than the round, flattened, upper portion, so that the fixture is kept in position by gravity. In this instance it is placed in the masonry wall near the meeting stile of the shutter. A similar fastener on the Chew house is placed in the window sill near the outer stile of the shutter. Another type of turning fastener that was quite popular is seen at Number 6043 Germantown Avenue, Germantown. It is held in place by a long iron strap screwed to the window sill, and the weight of the gravitating catch consists of a casting representing a bunch of grapes. More primitive and less satisfactory in use and appearance is the spring fastener bearing against the edge of the shutter seen at Wyck. Crude as these fixtures were, they have hardly been improved upon in principle, and similar designs of more finished workmanship are still used in modern work.