Observation Windows make it possible to view contents (or lack of contents) in a sealed container without opening the container. Windows come with attaching hardware or can be screwed into a threaded boss. If using a single observation window, contents can be viewed by shining a flashlight into the container. If two windows placed on opposite sides of the container are used, contents will block the view of the window on the opposite side.

| Access Ports | Breather Valve | Desiccant | Desiccant Breathers | Desiccant Reactivator Unit | Desiccator | Filtered Bag Vents |
| Humidity Indicator | Nitrogen Purge System | Observation Windows | Pipeline Dryers | Records Holders | Shelter Static Dehumidifiers |
| Shock Indicators | Temperature Monitor | Tie Down Shelving | Tie Downs | VCI Rust Prevention | Wheelchair Lift |