\documentclass[12pt]{article}
\usepackage{tikz}
\usepackage[a3paper,nohead,nofoot]{geometry}
\usepackage{etoolbox}
\begin{document}
\thispagestyle{empty}
\begin{tikzpicture}[remember picture, overlay, very thick]
\foreach \w / \h / \r in {1.5 / 1.8 / 6pt} {
\draw [line width=5pt] (current page.center)
+(-9 * \w, -9 * \h) -- +(-9 * \w, 9 * \h) --
+(9 * \w, 9 * \h) -- +(9 * \w, -9 * \h) -- cycle;
\foreach \s in {-7,-5,-3,-1,1,3,5,7} {
\draw (current page.center) +(\s * \w, -9 * \h) -- +(\s * \w, 9 * \h);
\draw (current page.center) +(-9 * \w, \s * \h) -- +(9 * \w, \s * \h);
}
\foreach \y in {-3, 3}
\foreach \x in {-3, 3} {
\fill (current page.center) +(\x * \w, \y * \h) circle [radius=\r];
}
}
\end{tikzpicture}
\end{document}
