Executive Portable Cabin 20ft

Why the 20ft footprint keeps winning over the 16ft version

When clients ask us to compare the 16ft and the 20ft, we usually pull out a project photo from a 2024 IT build in Whitefield. The site office was running on a 16ft cabin and the project manager could not fit a printer, a meeting table for four and a tea station without it feeling crowded. They upgraded to the 20ft the next month. The extra forty inches of width plus a slightly taller 9.5ft ceiling completely changes how the unit feels indoors.

Most of our repeat buyers — civil contractors, EPC project teams, RMC plant supervisors — settle on the 20ft because it gives them one usable workspace, one small storage zone and a discreet washroom corner if they want plumbing added later. Smaller sizes force compromises that get expensive in worker hours.

The 50mm PUF panel decision — and when we recommend going to 75mm

Our standard build uses 50mm polyurethane foam (PUF) sandwich panels with a density of 40 kg per cubic metre. For most of South India and central Maharashtra, this is the sweet spot — it keeps internal temperature roughly 6 to 8 degrees Celsius below outside ambient with a single 1.5-ton AC running.

We suggest the 75mm upgrade only when the cabin is going to a coastal location like Mangalore, Visakhapatnam or Kandla, or when the customer plans to keep server equipment inside. The thicker panel adds about ₹18,000–₹22,000 to the base price but reduces AC load by roughly 20 percent over a year of use.

• 50mm panel: standard projects, inland sites, single-shift use
• 75mm panel: coastal humidity, 24x7 operations, server or test equipment inside
• Rock-wool panel: required only when a fire-safety NOC is mandatory (hospitals, fuel depots)

Wiring, earthing and the things that quietly cause callbacks

Every Executive 20ft we ship leaves the factory with a 4-way MCB distribution board, a 30mA RCCB on the lighting circuit and a separate 32A point pre-wired for an AC. The earthing wire is run continuously from the body to a copper lug — this is the part most low-cost cabins skip, and it is the single biggest reason for nuisance tripping at the site.

If your site has long voltage dips (common at the end of feeder lines in Tumkur, Hosur SIPCOT and the Pune Chakan belt), tell us in advance. We will add a 5 kVA servo stabiliser mount inside the cabin so you do not lose AC compressors during a brownout.

Honest answers to what people actually ask us on call

How long does this cabin last on a real site? Our oldest Executive 20ft still in service was installed at a Bengaluru metro depot in 2018 and is now on its third project — we have refurbished the floor and repainted twice. The steel base frame is engineered for 10 to 12 relocations.

Can it be locked up for the monsoon and left vacant? Yes. Close the slider windows, leave the AC off, and we recommend placing a small bowl of silica gel inside. Reopen it in October and it is ready to use.

Will the unit pass a labour department inspection? The Executive 20ft, when used as a site office, meets the BOCW rest-shelter clauses for spaces below 200 sq ft. We can provide a build certificate for any site inspection.