Sofa RFQ Specifications: 12 Fields That Eliminate Quote Ambiguity

A sourcing manager once sent the same one-line request to four factories: "modular sofa, 4 seats, gray fabric, FOB Foshan." The quotes came back ranging from $185 to $610 per seat. None of the suppliers were cheating. Each had simply imagined a different product. The $185 quote used a pine frame, 22-density foam, and polyamide fabric. The $610 quote used kiln-dried hardwood, 35-density foam with a wrapped down core, and a Martindale 50,000 fabric. Both technically answered the question. The gap between them was not pricing power — it was specification failure.

Why Loose RFQs Breed Quote Variation

Factories quote to win, and in the absence of specification they will quote the configuration that wins the order at the lowest price. That configuration is rarely the one a buyer wants. Unstructured RFQs transfer the design decision to the supplier, and the supplier optimizes for conversion, not for the downstream end user. The result is the classic procurement trap: the lowest quote wins the order, and the order wins the right to disappoint the retail customer eighteen months later.

The fix is not more suppliers. The fix is a structured RFQ that closes the twelve specification gaps where suppliers substitute materials and methods to lower cost.

The 12 Fields That Lock Down a Quote

Structural Fields

Frame material. Specify species (kiln-dried Eucalyptus or beech), moisture content (under 12 percent), and joinery method (mortise-and-tenon with dowel reinforcement, glued and stapled). Without this, a supplier can substitute pine, plywood, or MDF and still call the frame "solid wood."

Suspension type. Name the system: sinuous spring (8-gauge, three clips per spring), hand-tied coil springs (8-way tied, 12-gauge wire), or webbing (Pirelli rubber). Suspension determines seat feel longevity more than foam does.

Cushion construction. Specify whether cushions are single-block foam, foam wrapped in Dacron, foam with a down-and-feather envelope, or a down-and-feather core. A "high-resilience foam cushion" can be any of these. Name the construction and the wrap ratio.

Stitching standard. State stitch type (double-stitched seam, 8 to 10 stitches per inch), thread spec (bonded nylon, tex 70), and seam allowance. Loose stitching specs let factories drop to single-needle construction that opens under load.

Leg material and finish. Specify metal (steel or stainless, gauge and powder coat thickness) or solid wood (species, height, and finish). "Chrome legs" without a gauge can mean a 1.0 mm tube that bends under a 110 kg user.

Material Fields

Foam density. Density (kilograms per cubic meter) and indentation force deflection (IFD). A sofa with "medium-firm foam" can be 22-density, 25-density, or 35-density — these are not the same product. Specify density and IFD for seat, back, and arm separately.

Fabric spec. Composition (polyester, poly-wool blend, linen-look), weight (grams per square meter), and abrasion rating (Martindale cycles or Wyzenbeek double rubs). A "gray fabric" without a Martindale number can be 15,000 or 50,000 cycles — a 3x difference in lifespan.

Leather grade. For leather upholstery, name the grade (full-grain, top-grain, corrected, split), hide origin (Italian, Brazilian, Chinese), thickness (1.1 to 1.4 mm typical), and finish (aniline, semi-aniline, pigmented). "Genuine leather" is meaningless at the contract level.

Specification Fields

Dimensions. Overall width, depth, seat height, arm height, back height, and clearance under the frame — all in millimeters with tolerance. Dimension fields without tolerance invite the factory to vary size by 3 to 5 percent to save fabric.

Packaging. Carton grade (5-ply or 7-ply), corner protectors (EPS or cardboard), wrap (PE bag, woven bag, or vacuum roll), and stacking limit. Packaging is where factories cut cost silently and where damage claims originate.

Label requirements. Law labels (US), fire safety labels (UK Furniture and Furnishings Fire Safety Regulations), origin marks, and care labels. A factory that does not know the destination labeling law will print a generic tag that fails import inspection.

Testing certifications. State the test standard and the cycle count required — BIFMA, EN 1728, or EN 16139. Without this field, a factory can ship a residential-grade sofa labeled for contract use.

How Each Field Closes a Specific Loophole

Each of the twelve fields exists because factories have, somewhere in the industry, exploited its absence. Frame material exists because pine passed as hardwood. Foam density exists because "high-density" was applied to 22 kg/m³ foam. Fabric Martindale exists because residential fabric was sold as contract-grade. The fields are not bureaucratic overhead; they are a record of the substitutions that have actually cost buyers money.

Structured vs Unstructured: A Quote Spread Example

When the same four factories received the structured RFQ — kiln-dried Eucalyptus frame, 32-density foam IFD 180, Martindale 30,000 fabric, 8-way tied coil springs, double-stitched seams, 1.2 mm steel legs, 5-ply carton with EPS corners — the quote spread narrowed from $185 to $610 per seat down to $340 to $395 per seat. The remaining variance was real factory cost difference — overhead, scale, and margin — rather than hidden material substitution. That is the spread a buyer can actually negotiate against.

Building the RFQ Template

The structured RFQ is not a one-time document. It is a template that travels with the SKU through sampling, PO, QC, and reorders. Each field should have a verification method attached — frame material verified by AQC inspection with moisture meter, foam density verified by sample weighing and calculation, fabric Martindale verified by test report. A field that cannot be verified is a field a factory will eventually erode.

The procurement teams that win on landed cost are rarely the ones with the cheapest quotes. They are the ones whose RFQs force every factory to quote the same product, so the price comparison is honest. Twelve fields is the minimum that makes that honesty possible.