\documentclass[letterpaper]{article}
%\usepackage[showframe]{geometry}
\usepackage{fourier}
\usepackage{pgffor}
\usepackage[dvipsnames]{xcolor}
\usepackage{tikz}
\begin{document}
\begin{tikzpicture}
$
\foreach \i [count=\i] in {0,...,7}
 {q
 \draw [red, thick] (0,\i+7.5) -- (1,\i+7.5) node[anchor=west] {\i *C};   
 \draw[red, very thick] (0,0) rectangle (3,16);
 }
 \foreach \i [count=\i] in {-8,...,-1}
 {
 \draw [blue, thick] (0,\i+7.5) -- (1,\i+7.5) node[anchor=west] {\i *C}; 
 \draw[blue, very thick] (0,0) rectangle (3,7);
 }
 $
\end{tikzpicture}
\end{document}