\documentclass{article}
\usepackage{microtype}
\usepackage[paper=letterpaper,layoutwidth=11in,layoutheight=8.5in,portrait]{geometry}
\usepackage[newdimens]{labels}% let the package do the work...
\usepackage{graphicx}
\usepackage[scaled]{helvet}
\usepackage[T1]{fontenc}
\graphicspath{ {.} {/tmp/labels/} }
\renewcommand\familydefault{\sfdefault}
%
\LabelGridtrue
\LabelInfotrue
%
%\LabelGridfalse
%\LabelInfofalse
%
\LabelCols=4
\LabelRows=8
%
\LeftPageMargin=0.25in
\RightPageMargin=0.25in
\TopPageMargin=0.5in
\BottomPageMargin=0.5in
%
\InterLabelColumn=0mm% adjust as required
\InterLabelRow=0mm
%
\RightLabelBorder=1mm% adjust to taste
\LeftLabelBorder=1mm
\TopLabelBorder=6mm
\BottomLabelBorder=1mm
%
\setlength{\baselineskip}{0pt}
\setlength{\emergencystretch}{3em}
\setlength{\lineskip}{0pt}
\setlength{\parindent}{0pt}
\setlength{\parskip}{0pt}
\setlength{\tabcolsep}{0pt}
%
\numberoflabels=1% set to 1 when you fill in the individual labels - this will just repeat 1 instance 20 times to show the layout.
%
\begin{document}
%
