The problem: The same twenty questions appear in every hospital door tender, every distributor onboarding call and every consultant RFI. This chapter collects them, with short answers and pointers to the chapters that treat each topic in depth.

38.1 Purchasing Questions

Q: What is a realistic lead time for custom medical steel doors? For standard OEM sizes from an established factory, 30–45 days production plus shipping is typical; ODM modifications and new certification add weeks to months. Prototype approval and submittals sit on the buyer's clock — slow approvals are the most common cause of "factory delays." See the chapter on OEM/ODM and custom manufacturing.

Q: Which matters more, door price or certificate coverage? Coverage. A cheaper door whose test report doesn't cover your sizes, glazing or hardware configuration is not cheaper — it is a liability discovered at inspection. See the chapter on specifications and procurement.

Q: Should I buy doors and hardware from one source? For hermetic and automatic doors, yes — the operator, seals and leaf are a tested system. For standard swing doors, factory-supplied leaf plus locally sourced, multi-source hardware reduces spare-parts risk. Trade-off discussed in the procurement chapter.

Q: What Incoterm should a first-time importer choose? FOB if you have a freight forwarder; CIF if you don't. Avoid EXW (you become responsible for export clearance in the seller's country) and treat DDP prices as opaque. See the export manufacturing chapter.

Q: How many spares should I order with the doors? Common practice: 5–10% extra on wear items (closers, seals, locks, kick plates), plus one spare operator and control board per automatic door type.

38.2 Technical Questions

Q: When is a hermetic door required versus a normal sealed door? When the room's pressure cascade must be maintained against leakage — operating rooms, isolation rooms, cleanrooms. Look for air permeability classification: EN 1026/EN 12207 Class 4 is the highest tightness class used on certified airtight medical doors (US work may cite ANSI/UL 1784). See the chapters on operating rooms and on isolation areas.

Q: What air pressure and air-change values apply to isolation rooms? CDC guidance and ASHRAE Standard 170 call for airborne infection isolation rooms to be at negative pressure to adjacent areas with at least 12 ACH for new construction, exhausted directly outside; operating rooms are positive to adjacent areas. Doors must be able to close and seal against these differentials — check closer/operator force ratings. See the ICU/isolation chapter.

Q: Stainless 304 or 316? 304 is the default for interior medical doors. 316 (molybdenum-bearing) is for coastal installations and areas with aggressive chlorinated disinfectants. 316 costs roughly 20–40% more; specify it where corrosion has a driver, not everywhere.

Q: Do fire-rated doors need annual inspection? In US-jurisdiction projects, yes — NFPA 80 requires inspection and testing after installation, after any maintenance, and at least annually, with documented repairs of deficiencies. Many other markets are adopting similar regimes. See the procurement chapter's cost-of-ownership section.

Q: Can I put a vision panel in a fire-rated or lead-lined door? Yes, but the glass must carry the same rating (fire-tested glazing, lead glass of equivalent Pb equivalence), within the size limits of the door's test report field of application.

Q: What clear opening does a patient bed route need? Plan on 1100–1250 mm clear for beds and imaging equipment; standard references put patient-room doors around 36 in (≈915 mm) and larger openings (≈44 in / 1118 mm class) where beds and emergency equipment pass. Always verify against the equipment list, not just the code minimum. See the OR and ICU chapters.

Q: Are automatic doors a hygiene upgrade? Touchless activation removes a contact point, but adds maintenance, a power dependency and safety-sensor requirements (e.g. EN 16005 / DIN 18650 type testing on European hermetic sliders). In low-traffic rooms a simple pull handle with good cleanability is often the better choice.

38.3 Glossary (Selected Terms)

Term Meaning
AIIR Airborne infection isolation room — negative-pressure single room for airborne pathogens
ACH Air changes per hour; ventilation rate metric
AQL Acceptable Quality Limit — sampling basis for pre-shipment inspection
Breakaway door ICU sliding door whose panels swing out for full-width emergency access
Clear opening Actual usable width with the door open at 90° — what beds pass through
DoP Declaration of Performance, required for CE marking under the EU Construction Products Regulation
Door schedule Master table of every opening with size, rating, hardware and remarks
Field of application The range of sizes/configurations a fire test report legitimately covers
Hermetic door Door engineered and certified for very low air leakage (e.g. EN 12207 Class 4)
ISPM 15 Phytosanitary standard for heat-treated export wood packaging
Kick plate Protective plate at door base against trolley/bed impact
Lead equivalency Radiation shielding thickness expressed in mm of lead
Pressure cascade Stepped pressure relationship (positive/negative) controlling airflow between zones

38.4 Quick Specification Checklist

  • [ ] Clear opening verified against largest equipment
  • [ ] Fire standard family consistent (EN vs UL/BS) across doors, frames, glazing
  • [ ] Air permeability class stated for hermetic doors
  • [ ] Closer/operator force checked against room pressure differential
  • [ ] Stainless grade matched to disinfectant regime and climate
  • [ ] Hardware available from multiple sources in your market
  • [ ] Spares package and five-year parts pricing in the contract
  • [ ] Inspection/maintenance regime defined (fire doors: documented periodic inspections)

Recommendation: keep this chapter as the shared onboarding document for new project team members. Most specification errors come from smart people using the same word — "1200 door," "fire door," "hermetic" — to mean different things.

Sources

  • CDC Guidelines for Environmental Infection Control in Health-Care Facilities: www.cdc.gov
  • Fire Doors and NFPA 80 FAQs — NFPA: www.nfpa.org