This is a two pieces support, combine them and you are done. The max supported frame size is: Height 22cm Width 17.5 cm Length 1.8 cm You may have to scale this from 100% to 1000% in your slicer before printing.
Picture Frame Stand by Bernie
▷ picture frame easel stand 3d models 【 STLFinder 】
Free STL file frame stand holder 🖼️・3D printer model to
▷ frame stand 3d models 【 STLFinder 】
picture frame stand 3D Models to Print - yeggi
FOLDING PICTURE FRAME STAND REPLACEMENT by Andi @ LFG Design
Folding Picture Frame Stand by David@3DOMEngineering
Free STL file Frame stand・Design to download and 3D print・Cults
Picture Frame Stand by SpikeUK
Frame – Free download 3d model Files
7,400+ Standing Picture Frame Stock Photos, Pictures & Royalty
Farfi 1 Set Photo Frame Stand Strong Load Bearing Dual Slot Design
Simple Standing Photo Frame by linz.designs
Free 3D file Folding Picture Stand - Print in Place Hinge 🖼️・3D