Accessories | Doors | Roll-up Doors | Windows Need Modifications & Accessories?We do that. Bolt-On Lock Boxes $100.00 Shelving Brackets $99.00 Small Vents $25.00 Portable Storage Big Air 45 $175.00 Rollup Door $1,800.00 36” Man-door $1,800.00 Big Red Locks $375.00 Block Lock $55.00 Disc Lock $25.00 Windows 42″x30″ $675.00