4 E-Z Curtain Rod Holders 2 Windows Hangers Instant Up EZ Easy No Nails Nailing Description The Instant-Up Curtain Rod Holder is a stress and damage free way to hang a curtain over any window in the house. The Instant-Up Curtain Rod Holder fits over the corner molding of windows which results in a nail and hammer-free installation. The Instant-Up Curtain Rod Holder works best on wooden moldings up to 2