Size and price drip pans, equipment trays, and shallow sheet-metal boxes
Plan drip pans, equipment trays, shallow chassis boxes, and welded leak-resistant pans from finished dimensions, wall height, material, bend radius, and K-factor — with an instant shop-rate price estimate. Use the output for RFQ prep before FortiFab finalizes tooling and flat patterns.
Flat-pattern results
Planning estimate — updates as you edit.
Planning view — only the overall blank is dimensioned. Bend-line positions are approximate.
Flat blank
27.77 × 21.77 in
Planning blank only — FortiFab confirms the production flat pattern, tooling, and corner strategy during quote review.
Quote formed pansEstimated price · small-batch rate
$60.40 each
$604.00 total for 10 pcs · Instant estimate — FortiFab confirms final pricing.
- Quantities of 10 or fewer carry the shop small-batch rate; unit price drops at 11+.
Hinges, latches, gasket/seals, leak testing, and protective film are excluded from the estimate — priced on review.
- Bend deduction
- 0.115 in
- Sheet area each
- 4.2 ft²
- Weight each
- 10.29 lb
Pan inputs
All dimensions are in inches. Enter finished part dimensions — the calculator adds flange material and subtracts bend deduction to estimate the flat blank.
Pan style
Four-sided shallow box — common for chassis pans, equipment trays, catch pans, enclosure bases, and cover lids.
Good default for painted or powder-coated industrial parts.
Finished size
Length
Width
Tell FortiFab whether these are inside, outside, or critical fit dimensions in your RFQ.
Drain / mount holes
Count
Diameter
Optional round holes for drains or mounting — included in the laser estimate. Positions are confirmed during quote review.
0.33 is a common planning default for air bending. FortiFab confirms shop values per material and tooling.
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Flat-pattern notes and price breakdown
Planning blank for shallow box / chassis pan: 27.771 in × 21.771 in, 4 bends, 0.125 in bend allowance per 90° bend. Estimated total weight for 10 parts: 102.88 lb. Drip pans, equipment trays, chassis pans, and welded containment pans all share this bend math — only the flange count and corner strategy change.
Price breakdown (each)
- Material
- $6.56
- Laser cutting
- $0.26
- Bending (4 bends)
- $14.00
- Finish / powder coat
- priced on review
- Shop subtotal
- $20.82
- With 45% markup
- $30.20
- Small-batch rate (qty ≤ 10)
- × 2 — drops at 11+
- Unit estimate
- $60.40
- Total (10 pcs)
- $604.00
Instant estimate — FortiFab confirms final pricing. Hinges, latches, gasket/seals, leak testing, and protective film are excluded from the estimate — priced on review.
Corner relief matters
Four-sided pans usually need corner relief, weld details, or tab strategy. Include whether corners are open, welded, notched, or sealed.
Finished dimensions
Tell FortiFab whether length/width are inside, outside, or critical fit dimensions. That affects bend deduction and tolerance review.
Planning output only. FortiFab confirms final material, tooling, bend deductions, hardware, tolerances, finishes, and manufacturability during quote review.
Your quote summary
Attach or paste this summary with your request — it gives FortiFab the details needed to review the flat pattern.
- Style
- Shallow box / chassis pan
- Material
- Carbon steel · 0.06 in
- Finished size
- 24 × 18 in
- Flange height
- 2 in · 4 × 90° bends
- Bend math
- BA 0.125 in · BD 0.115 in · K 0.33 · R 0.06 in
- Flat blank
- 27.771 × 21.771 in
- Sheet area
- 4.2 ft² each
- Weight
- 10.29 lb each · 102.88 lb total
- Quantity
- 10 pcs
- Estimate
- $60.40 each · $604.00 total for 10 pcs
Instant estimate — FortiFab confirms final pricing. Hinges, latches, gasket/seals, leak testing, and protective film are excluded from the estimate — priced on review.
Sheet metal pan RFQ guide
Estimate formed pans, trays, shallow boxes, and enclosure bases
Use this calculator to prepare a quote-ready description for formed sheet-metal pans, trays, covers, drip pans, and shallow boxes. Include whether dimensions are inside or outside, flange heights, corner style, drain holes, material, finish, and whether leak resistance matters.
Common searches
- sheet metal pan calculator
- formed pan calculator
- sheet metal tray fabrication
- custom metal box calculator
Best buyer use cases
- Formed trays, drip pans, covers, and enclosure bases
- Quick blank-size and weight planning
- RFQs where bend/corner treatment affects price and manufacturability
Ready to turn this into a reviewed fabrication quote?
Send drawings, sketches, material, thickness, finish, quantity, and any fit-up requirements so FortiFab can review manufacturability.
Sheet-metal pan and box FAQs
Flat patterns for formed trays and boxes need shop-specific review before release.
Instant estimate
$60.40 each · $604.00 total