Picture Frame Destination has added a new line of stretcher bar frames. Traditional tongue and groove stretcher bars are difficult to square and might collapse when you try to stretch the canvas. Our stretcher frames are ready made, pre squared and have permanent 90 degree corners. We use high quality solid wood strainer stock that we hand glue and nail together before shipping to you. Spend less time playing with stretcher bars and more time creating or marketing your art. We have five different stretcher strip profiles from our inexpensive small S110 frame that allows your stretched canvas to be framed in a traditional wood frame all the way to our two inch tall S150 stretcher frame ideal for gallery wraps. We offer our stretchers in over 60 different sizes in addition to full custom frame sizes. Note: if you are concerned that your canvas may sag over time you will still want to use traditional stretcher bars with adjustable corners.