I would like to install a guardrail system but don’t want it to affect the aesthetic of my building. What can I use? 21/04/2020 D I would like to install a guardrail system but don’t want it to affect the aesthetic of my building. What can I use? The Sentry fold down guardrail system is the perfect solution. It folds down neatly when not in use so there is minimal visual impact to your building. For more information refer to GW31 and GW32 for the various options available. LINK TO FAQ