12×18 Open House 3 Design templatesCoroplast Stake Sign Open House Signs Real Estate 12x18 Coroplast Open House Stake Sign 12x18 Open House 3 12x18 Open House 3 Make your own personalized design using this template,online and for free. You can open the template in our online designer tool, change a product, color or customize template design. Open template 12 x 18 Yard Sign Try out your first sign for $0.84!* 4mm coroplast All signs feature full color printing Available with single- or double-sided print Metal stake options available *Discount price is for quantity of 1 single-sided 12 x 18 sign, no stake