Mill Valley Replacement Cushions for Hampton Bay (2026 Custom-Fit Guide)

Cabana Stripe Canvas stripe fabric swatch in Gray — outdoor cushion upholstery option
Cabana Stripe Canvas stripe fabric swatch in Blue — outdoor cushion upholstery option
Cabana Stripe Canvas stripe fabric swatch in Gray — outdoor cushion upholstery option

Rebuild swatches — every series chart cuts in any of the 119 fabrics.

Collected reference measurements for every piece of the Hampton Bay Mill Valley line — measured from OEM & supplier listings.

The Mill Valley line at a glance

Mill Valley is a Hampton Bay modular sectional from Home Depot, and it illustrates the sectional replacement problem perfectly: four rectangular base pads plus a curved-corner wedge whose front edge is 27 inches but whose back edge stretches to 72 — a trapezoid no standard cushion catalog has ever stocked. When the original 6-inch pads flatten, the whole sectional reads as tired.

We cut every Mill Valley piece to the dimensions below — rectangles and the tapered wedge alike — in cotton linen, tech fabric, or premium velvet, made by the factory that ships them. These figures are owner-measured, so treat them as approximate: confirm against your own pads before ordering, or send us a paper template of the wedge and we’ll match it exactly.

Mill Valley cushion sizes — full chart

Custom-fit measurements for the full Mill Valley line. Width × depth × thickness, in inches. owner-measured, treat as approximate

PiecePartQtyWidth × Depth × Thickness (in.)
Sectional Base PadsSeat425 × 27 × 6 (four separate cushions, each 25" wide)
Corner / Center WedgeSeat (trapezoid)127 / 72 × 27 × 6 (trapezoid: 27" front / 72" back width)
Qty explained: "Qty" is the number of separate cushions — four identical base pads plus the one-piece tapered wedge. Back pillows for this line have no published figures; we make them to your measurements.
Wedge note: the corner/center cushion is a trapezoid — 27" at the front edge, 72" along the back, 27" deep. Trace the outline on kraft paper and mail or photograph it; trapezoids are cut from templates, not from single measurements.

Don’t see your piece? Send us a photo and your measurements — we make custom cushions for every Hampton Bay frame. Not sure it’s Mill Valley? See how to measure your cushions and match the numbers.

Is your set really Mill Valley?

Check three things: (1) the white label under the seat frame or inside the arm — Hampton Bay model numbers usually start with a supplier code like GLD or THD; (2) your Home Depot order history or the original manual; (3) a tape measure — four 25" × 27" base pads on 6" loft around a 27"-front / 72"-back tapered wedge. Our full measuring guide walks you through it.

Fabric options

Same custom-fit dimensions, three fabric tiers. Cotton linen is the durable everyday pick; tech fabric is water-resistant and wipes clean; premium velvet delivers the high-end look and stands up to cat claws.

Comparing fabrics? See the fabric options in the custom order flow — same dimensions, any tier.

Measure before you order

Before you order, spend three minutes with our measuring guide — on a sectional, measure every module and both edges of the wedge: front and back widths differ by 45 inches on this line, and one number is not enough to cut a trapezoid.

Get your Mill Valley cushions

Not sure about a size? Upload a photo and we’ll confirm the fit before we cut. Not this series? Find your shape and order custom.

Frequently asked questions

Why is the Mill Valley wedge cushion such an odd shape?

It wraps the curved corner of the sectional: 27" across the front edge, 72" along the back, 27" deep. It cannot be ordered from any standard size — we cut it from your traced template.

Can I order just one base pad?

Yes. Each 25" × 27" × 6" base pad is cut individually — replace one worn pad or all four, and we dye-match every fabric across batches as closely as the mill allows.

Are there back cushions for Mill Valley?

The published owner-measured data covers the seat layer only. If your back pillows need replacing, measure them (width × height × thickness) and we’ll cut to your numbers.

How much do Mill Valley replacement cushions cost?

Pricing comes from our instant quote tool — enter your piece count and dimensions for a factory-direct estimate in seconds.

How long do Mill Valley cushions take to make and ship?

Every set is cut and sewn after you order — typically 7–14 business days in production — typical custom shops quote 3–6 weeks — then flat-rate shipping to your door. Rush production (4–7 business days) is available for most fabrics.

Can I send a photo of my furniture instead of measuring?

Yes. Upload a photo of your set (and the old cushions if you still have them) with your quote request, and our team will cross-check your numbers against the Mill Valley chart above before we cut anything.

Why order from us

  • Factory-direct. We are the outdoor cushion factory — we cut, fill and sew every Mill Valley order ourselves. No middleman, no dropship.
  • 10+ years making cushions. Deep-seating replacements are a daily product for us, not a side catalog.
  • 35–65D density foam. Seats filled with firm, high-resilience foam that keeps its front edge — softer than pancaked originals, built for seasons.
  • Made to order, no minimums. Any piece, any fabric tier, one cushion or the full set.
  • Cut to ± ½ inch, in writing. Your numbers are cross-checked against this chart before cutting — a finished piece outside tolerance is remade free.

Related Hampton Bay series

  • Beverly — sectional modules at 22.5" × 25.75"
  • Beachside — sectional seating with a 24.41" loveseat section
  • Riley — 5-seat sectional on slim 3.5" pads