- Thick expanded Polystyrene insulation bonded to exterior and interior steel skins
- Patented Safe-t-bracket cannot, under normal conditions be removed while tension is on.
- Aluminum bottom retainer is designed to seal out the elements.
- Weather tight tongue and groove joint helps seal out rain, wind, snow.
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- Galvanized steel hinges are durable, reliable and secure.
- Top quality rollers provide durability and smooth.
- Galvanized end styles .
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