Access panel sizing calculator
Turn rough openings into custom sheet-metal access panel specs
Size flat covers, flanged doors, removable hatches, and vented access panels. Estimate cover size, blank size, fastener count, and weight before requesting a FortiFab quote.
Panel inputs
Formed returns add stiffness and clearance around equipment openings.
Visible cover
20.0 × 26.0 in
Flat blank
22.5 × 28.5 in
Weight each
10.91 lb
Fasteners
16
Quote-ready panel summary
Quote 6 × Carbon steel flanged access door for a 18.000 in × 24.000 in rough opening. Visible cover size is approximately 20.000 in × 26.000 in. Latch/fastener note: Screw-fastened.
Bend count
4
Sheet area each
4.45 ft²
Total weight
65.47 lb
Planning output only. FortiFab confirms final material, tooling, bend deductions, hardware, tolerances, finishes, and manufacturability during quote review.
Need access panels fabricated?
Include opening size, environment, material, fasteners, hinges/latches, airflow, and finish notes with your RFQ.
Access panel FAQs
Access panel dimensions depend on the actual opening, fasteners, seals, hinges, and service clearance.