Direct Assessment
Provide your item's exterior dimensions alongside the narrowest clearance point in your entryway. Our calculation engineers review edge cases and return certified pass/fail margins within four hours.
Verification Channels
Three ways to check clearances
Choose the fastest verification route based on your current project urgency, whether on the showroom floor or reviewing blueprints.
Showroom Live Chat
Blueprint Analysis
Formula Archive
Instant tape-measure assistance while shopping. Connect with an engineer to evaluate furniture tags against doorframe widths.
Upload CAD drawings, building schematics, or multi-flight stair diagrams for comprehensive diagonal clearance reports.
Browse mathematical tolerance standards, elevator cab allowances, and box pivot equations in our self-service reference base.