---
title: Entrance Flooring and Walk-Off Systems
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label: Spare Tread Inserts / Tiles (Attic Stock)
type: range
−unit: % of installed insert length/area
+unit: '% of installed insert length/area'
options:
min: 2
…45 unchanged lines
## Failures arising from a recess formed to the wrong depth or without required drainage, from loads exceeding the grille's rated rolling load, or from maintenance contrary to the manufacturer's instructions are excluded.