RHF Corner Sloped Back Cushion Cover

Boxed & Piped Cushion with Foam & Dacron
Boxed & Piped Cushion with Foam & Dacron

How to Order RHF Corner Sloped Back Cushion Cover (Made Easy)

Pick Your Units – Choose whether you’re measuring in millimetres (mm), centimetres (cm), or inches (“) and enter your sizes
Need a New Inner? – Choose if you want us to supply a cushion interior or just the cover.
Add Extras (Optional) – Add Stockinette or Dacron wrap to make the cushion plumper and easier to fit.
Design Your Cover – Pick your cover style and answer a few quick questions.
Add Any Notes – Let us know anything extra (e.g. zip position, which side is the front).
Add to Cart – Once you’re happy, click Add to Cart.

Now Choose Your Fabric

Once your cover design is in the cart, you’re ready to choose your fabric.

Measurements

Measurements

Reference Image

choose your cushion filling

COVER ONLY (NO FOAM)

Use this option to create a cover to the sizes entered above

BUDGET LIGHTWEIGHT FOAM V28

This lightweight foam is a great choice for headboards, crafts, costumes, and a variety of general-purpose projects. It’s easy to work with and perfect for decorative or low impact uses. Just a heads-up: we don’t recommend this grade for seating or any application where it’ll need to support weight regularly.

Grade
V28
Density
28 kg / m3
Properties
Flame Retardant
Not Suitable For Seating

STANDARD FIRM RX33 (BLUE)

Medium density firm foam. Suitable for seating perfect for sofas, dining chairs, boats, caravans, and camper van seating and mattresses. Best choice for cushions 3–4 inches thick. May be too firm for cushions above 5” in thickness  

Grade
RX33
Notional Hardness
200 N
Density
33 kg / m3
Properties
Flame Retardant
Firm, Medium Density Foam

STANDARD MEDIUM FIRM MATTRESS FOAM RX36/125

Medium-density foam ideal for mattresses 4″ and above. It provides balanced support and comfort, making it a great choice for those seeking a medium-firm sleeping surface. Keep in mind—thicker mattresses offer more support than thinner ones, regardless of foam grade.

Grade
RX36/125
Notional Hardness
125 N
Room Temp. Hardness
125 N
Density
36 kg / m3
Properties
Comfort level: MEDIUM FIRM for mattresses above 4" (`10cm ) in thickness
Density: MEDIUM

PREMIUM HIGH FIRM RX39 (BLUE)

Most popular High density firm foam. Suitable for seating perfect for sofas, dining chairs, boats, caravans, and camper van seating and mattresses. Best choice for cushions 3–4 inches thick. May be too firm for cushions above 5” in thickness

Grade
RX39/200
Density
39 kg / m3
Properties
Flame Retardant
Highly Recommended Firm Seating & Mattress Foam

PREMIUM MEDIUM FIRM RX39 (ORANGE)

RX39/120 Orange Foam CushionsA popular high-density foam with a soft to medium feel. Ideal for achieving a medium comfort level in thicker cushions or a softer feel in thinner ones. Also works well as a top layer over firmer foam to enhance comfort.

Grade
RX39/120
Notional Hardness
120 N
Density
39 kg / m3

PREMIUM MEDIUM FIRM REFLEX 40H (GREY)

High density, medium firm foam Reflex 40h is a high-quality foam known for lasting comfort and support. It bounces back quickly and keeps its shape for years—perfect for sofa cushions, armchairs, or even as a mattress.

Grade
REFLEX 40 H
Notional Hardness
150 N
Density
40 kg / m3
Properties
Flame Retardant
Highly Recommended, High Density, Medium Firm, Seating & Mattress Foam

VASCO 50 MEMORY FOAM (WHITE/ YELLOW)

High-quality UK-made, heat-sensitive foam that softens and moulds to your body, offering pressure-relieving comfort. Commonly used in mattresses, toppers, pillows, wheelchair cushions, and medical products.

Grade
VASCO 50
Notional Hardness
65 N
Density
50 kg / m3
Properties
Flame Retardant

RX39 FIRM / MEMORY FOAM 1" (2.5cm) COMBO

This product is made by laminating RX38 firm blue foam with a 1″ layer of memory foam. It is essential that the total thickness (C) is greater than 1″. If you order this product at exactly 1″ thick, it will consist of memory foam only

Grade
RX39 / Memory Combo
Density
40 kg / m3
Properties
Flame Retardant

RX39 FIRM/ MEMORY FOAM (2") COMBO

This product is made by laminating RX38 firm blue foam with a 2″ layer of memory foam. It is essential that the total thickness (C) is greater than 2″. If you order this product at exactly 2″ thick, it will consist of memory foam only

Grade
RX39 / Memory Combo
Density
40 kg / m3
Properties
Flame Retardant

MEDIUM FIRM REFLEX 40 / MEMORY 1" COMBO

IMPORTANT GRADE INFORMATION This product combines Reflex 40 medium foam with a 1″ layer of memory foam. If you order at 1″ thick, you’ll receive memory foam only — without the Reflex 40 support layer. To ensure proper comfort and support, the total thickness must be greater than 1″.

Grade
Reflex 40
Notional Hardness
135 N
Room Temp. Hardness
135 N
Density
40 kg / m3
Properties
Flame Retardant

MEDIUM FIRM REFLEX 40 / 2" MEMORY COMBO

IMPORTANT GRADE INFORMATION This product combines Reflex 40 medium foam with a 2″ layer of memory foam. If you order at 2″ thick, you’ll receive memory foam only — without the Reflex 40 support layer. To ensure proper comfort and support, the total thickness must be greater than 2″.

Grade
Reflex 40 H / v50
Notional Hardness
135 N
Room Temp. Hardness
135 N
Density
36 kg / m3
Properties
Flame Retardant

30PPI RETICULATED FOAM

A durable, open-cell foam that resists water, humidity, and chemicals — ideal for outdoor seating and air/water filtration. Its breathable structure also makes it great for humidifiers, ventilation, and industrial filtration systems.

Properties
Not Fire Retardant (None F/R)
Perfect for Outdoor Seating

SUPERIOR HIGH DENSITY FIRM RG50 (WHITE)

High density firm foam RG50 is a high-density, firm foam ideal for heavy-duty support. It’s commonly used in seat cushions, gym mats, and other applications where durability and strong support are key. This is the perfect foam for thin Pop-top or Roof-Tent mattresses.

Grade
RG50/230
Notional Hardness
230 N
Density
50 kg / m3
Properties
Flame Retardant

SUPERIOR HIGH DENSITY MEDIUM FIRM REFLEX 50 (PINK)

Luxury Relex 50  is a high-density, medium firm foam designed for superior support and durability. Ideal for premium seating and high-quality mattresses, this foam is perfect for deep-fill cushions and applications where long-lasting structure and resilience really matter. It holds its shape beautifully, delivering both comfort and strength over time.

Grade
REFLEX 50
Notional Hardness
135 N
Density
50 kg / m3
Properties
Flame Retardant

FIBRE FOR BACKS, BOLSTERS & PILLOWS

Grade
100% Hollow Fiber

FIBRE FOR SEATS CUSHIONS

FOAM CORE FEATHER (MEDIUM FIRM)

High density, medium firm foam Reflex 40h is a high-quality foam known for lasting comfort and support. Bounces back quickly and keeps its shape for years—perfect for as the core for a feather or fibre seat interior    

Grade
REFLEX 40
Notional Hardness
135 N
Room Temp. Hardness
135 N
Density
40 kg / m3

FOAM CORE FIBRE INTERIOR

This Foam core feather combination is best suited to those wanting a medium form seat  

Grade
REFLEX 40 H
Notional Hardness
135 N
Room Temp. Hardness
135 N
Density
40 kg / m3

EUROPEAN 302 DE-QUILLED FEATHER

European 302 de -quilled for extra comfort

    Before you order fabric Please send your design to the basket then order fabric 

Your Created Product

Measurements

choose your cushion filling

FROM £10.00

Description

Custom RHF Corner Sloped Back Cushion Covers – The Perfect Fit for Angled Corners

When you’ve got a right-hand-facing (RHF) corner cushion with a sloped back, you know one thing for sure — no off-the-shelf cover is going to cut it. These cushions are an awkward blend of angles, inclines, and corner joins that need something far more bespoke than a square peg in a round hole.

That’s exactly why we create made-to-measure RHF Corner Sloped Back Cushion Covers — custom-cut to follow every line, corner, and slope of your cushion with absolute precision.

So whether you’re finishing off the corner of a built-in bench, upgrading your boat’s saloon seating, or refreshing your camper’s dining area — this cover is the right fit for the right angle.


Cut to Your Spec – Because Corners and Slopes Don’t Lie

Unlike a basic flat cushion, a RHF corner cushion with a sloped back involves tricky angles and directional layout. These aren’t the kind of details you can fudge.

That’s why we start with your exact dimensions — not averages, not templates. We’ll shape your cover to match the back slope, corner junctions, and cushion depth to the millimetre.

The result? A snug, professional fit that won’t ride up, twist, or bunch — even after hours of use. In short, it fits how it’s supposed to.


Choose a Style That Suits the Space

Once we’ve locked in the shape, it’s time to decide how it should look. That’s where our four tailored styles come in — each offering a different aesthetic and feel:

  • Wrap Style – minimal, clean, and modern

  • Box Style – sharp lines and solid form

  • Box with Piping – classic and crisp, adds contrast and definition

  • Box Pleat Style – traditional, with character and texture

Whatever your preference, your cover is made to order in our UK workshop — stitched by skilled hands and finished with care.


Fabric Options for Real-World Use

Function matters, but fabric finishes the job. Whether your cushion is out at sea, on the road, or in the corner of your kitchen, we’ve got a material to suit.

  • For marine, motorhome, or outdoor seating, we recommend our rugged, UV-stable, water-resistant fabrics — built to withstand damp, wear, and sunlight.

  • For interior setups, explore our range of plush velvets, durable cottons, or textured weaves — available in a wide range of colours.

Want flexibility? You can even choose different fabrics for the front and back — great for seasonal swaps or reversible designs.

Still deciding? Request your free fabric samples — we’ll send them straight to your door.


Need New Foam Too? We’ll Shape That to Match

Old foam can make even the best cover look tired. If yours is past its best, we can cut new foam inserts to match your RHF corner sloped cushion perfectly.

You can choose from:

  • High-density foam – for structured, upright support

  • Reflex foam – for a softer, sink-in feel

And for the perfect finish, we also offer Stockinette or Dacron wrapping — helping your foam slide in smoothly while giving your cushion a fuller look.


Add Practical Extras to Keep Everything in Place

We know RHF corner cushions often sit in awkward spots — and we’ve thought ahead with optional add-ons that make life easier:

  • Choose the zip position for easy fitting and removal

  • Add a non-slip base, especially useful for moving vehicles and slippery surfaces

  • Include Velcro tabs, ties, or fixing straps to keep cushions where they should be — no more slipping or shifting

All covers are also fully removable and washable, so they’re easy to maintain and built to last.


No Need to Replace What Still Works

Cushions like this aren’t cheap — or easy — to replace. But in many cases, the foam’s still good, and it’s just the cover that’s looking worse for wear.

Rather than bin the whole thing, our made-to-measure RHF corner sloped back cushion covers offer a smarter, greener solution. Keep what works. Refresh what doesn’t.


How to Order Your RHF Corner Sloped Back Cushion Cover

We’ve made the process straightforward and accurate — here’s how:

  1. Select your unit of measurement – mm, cm or inches

  2. Enter your cushion’s lengths, widths, depths, and slope measurements

  3. Pick your preferred style and fabric

  4. Add any notes (e.g. zip placement, direction, fabric on each side)

  5. Click “Add to Cart” – and we’ll take care of the rest

Need help with measuring or choosing extras? Get in touch — we’re here to guide you.


Why Choose Foam4U?

At Foam4U, we don’t just make cushion covers — we make them properly. With decades of experience, quality materials, and a team of skilled UK makers, we create products that are practical, durable, and built around your space.

So if you’re ready to upgrade your corner seating, camper cushions, or marine backrests — your RHF Corner Sloped Back Cushion Cover is just a few clicks away.

Made to measure.
Made in the UK.
Made with care.

 

 

Our sister website www.thefoamshop.co.uk