Everything you need to turn a sealed steel box into a usable space. This bundle pairs our commercial-grade roll-up door with the weld-in sliding security window, so you get walk-in-and-work access on one wall and daylight plus ventilation on the other - cut, framed, and sealed in a single fabrication session instead of two separate projects months apart. Roll-up door available in 4', 6', 7', and 8' widths (7' height). Choose your door color after checkout. Full Description Do the cutting once. This is the part most people learn the hard way. Adding a roll-up door means renting or buying a grinder or plasma cutter, sourcing steel tube for the frame, dragging out a welder, squaring an opening, and sealing the perimeter. Six months later, when you decide the container is too dark and too humid to actually work in, you do the whole thing again for a window. Buying them together means one setup, one cut day, one caulk-and-flashing pass, one cleanup. If you're paying a fabricator by the hour, that's the difference between two trip charges and one. The door: real access, not a bigger hatch. Standard cargo doors are heavy, swing wide, and demand clearance you usually don't have. A roll-up door lifts overhead on a spiral counterbalance barrel, so a single person can open it by hand and nothing swings into a parking spot, a fence, or a shelving aisle. 26-gauge corrugated galvanized curtain - rigid enough to hold shape, light enough to roll by hand 9-1/2" spiral enclosed spring counterbalance with factory-lubricated, oil-tempered springs 2" universal-mount, 18-gauge galvanized guides and 12-gauge factory-installed brackets Super Durable Polyester finish - you pick the color after you order Rated to 100 mph SBC and 130 mph ASCE 7 exposure B wind loads across all sizes Mini latch takes padlocks up to 7/16" shank, with cylinder lock provisions included Mounts to steel, concrete, or filled block jambs The window: light and air without a security hole. Cutting a window into corrugated steel weakens the panel and creates an obvious entry point. This kit solves both. The included steel tube welds into the opening and restores rigidity around the cut, giving the window a square, true seat. The security bars are welded in - not clipped on - so the opening reads as hardened from the outside. Dual-pane insulated glass cuts the condensation that single-pane glass causes inside a steel box Horizontal sliding sash - no swing clearance needed on either side Integrated locking system plus a mesh screen for bug-free ventilation White PVC frame - no painting, no rust, no annual maintenance 26-1/2" window in a 28-3/4" weld-on steel tube Why these two together. Cross-ventilation is the reason. Open the roll-up on one wall and the slider on the other and you get actual airflow through the container instead of a hot pocket of stale air. That combination is what makes a container work as a shop, a jobsite office, a hobby garage, or a retail build-out - rather than just a dry place to stack things. What's Included Roll-Up Door Roll-up door assembly with curtain, guides, brackets, barrel, and latch (1) - size of your choice Note: door framing material is not included. See our installation guide - building the frame is straightforward. Sliding Security Window Kit Weld-on steel tube frame (1) PVC window frame (1) Sliding dual-pane window with welded security bars and mesh screen (1) Specifications Roll-Up Door Security Window Sizes 4' / 6' / 7' / 8' W × 7' H 26-1/2" × 26-1/2" × 3-1/4" Frame Not included (customer-built) 28-3/4" steel tube included Material 26-ga corrugated galvanized steel PVC frame, dual-pane glass Finish Super Durable Polyester, color of choice White Operation Hand-operated roll-up Horizontal sliding sash Security Mini latch, padlocks to 7/16"; cylinder lock provisions Welded steel bars + integrated lock Installation Frame + bolt/weld tracks Weld-on tube, bolt-on window Fitment Steel, concrete, or filled block jambs All standard shipping containers Installation Overview Both openings follow the same sequence: measure and mark → cut → frame → mount → seal. Plan both openings before cutting. Keep the door and window on opposite or adjacent walls for cross-ventilation, and stay clear of corner castings and door frames. Cut both openings in one session. Angle grinder, plasma cutter, or torch. Full PPE - gloves, eyes, ears. Frame the door opening with steel tubing or structural lumber, squared and level, welded or bolted to the wall. Weld the window's steel tube directly into its opening - this one is supplied with the kit. Hang the door (two people or lifting equipment - it's heavy), align the guides, fasten tracks and header. Bolt the window into its welded tube. Seal everything with caulk or flashing, then cycle the door and slider several times to confirm smooth operation.
