Trapezium shaped foam cut to size – caravan and bay window cushion foam
Trapezium Shaped Foam Cut to Size

Select options This product has multiple variants. The options may be chosen on the product page

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Trapezium Shaped Foam Cut to Size

Choose between a standard foam make up or bonded (multi foam)
The Budget Blue Foam (Grade 33) is our most used high-density foam grade. It is a firm foam, widely used for dining pads, upholstery repairs, garden seating, window seats and caravan seating. For high-use items, please choose the Premium Blue foam instead.

Specification/Data Information
  • Colour - Blue
  • Density (Kg/m3) (1) 34-37
  • Hardness (N) (2) 110-140
  • Tensile (ka-min) (4) 50
  • Elongation (% min) (4) 90
  • The "36 Budget Beige Foam" is perfect for sofa cushions, seat pads, and campervans. Its optimal density, hardness, and durability ensure comfortable seating and long-lasting support. Whether you need cushioning for your living room, dining chairs, don-the-go sleeping arrangements, this foam grade has you covered.

    Specification/Data Information
  • Colour - Beige/Pink
  • Density (Kg/m3) (1) 34-37
  • Hardness (N) (2) 110-140
  • Tensile (kPa-min) (4) 50
  • Elongation (% min) (4) 90
  • Our Premium Blue Firm Foam (Grade 39) is a high-density foam, perfect for sofa seats if you are looking for a very firm cushion. It is also suitable for many other applications, including upholstery repairs, boat seating, caravan and campervan seating, window seats, dining pads and much more. Our premium blue 39h foam can be supplied in either pale pastel or a ocean blue colour. Both have the exact same density’s and properties to one another. Colour is purely dependant on the supplier it is provided from.

    Specification/Data Information
  • Colour - Blue
  • Density (Kg/m3) (1) 38-40
  • Hardness (N) (2) 180-220
  • Tensile (kPa-min) (4) 50
  • Elongation (% min) (4) 90
  • Comp set (% max) (5) 8
  • Our 6lb Recon Foam is a very firm grade, used for hard-wearing seats. It’s ideal for bar seating and stools, church kneelers, gym mats and other hard-wearing commercial furniture.
    Our Memory Foam is a high quality foam, used to add extra comfort and support to any mattress. It can also be used for mattress toppers, pillows, wheelchair cushions and much more.

    Specification/Data Information
  • Colour - Yellow/White
  • Density (Kg/m3) (1) 38-42
  • Hardness (N) (2) 60-90
  • Tensile (kPa-min) (4) 50
  • Elongation (% min) (4) 160
  • Recovery Rate 3-second
  • Luxury Reflex Grey Foam is a high-quality foam that offers excellent bounce and resilience. It is specifically designed for sofa seating applications, making it a perfect choice for those looking for a comfortable and supportive seating experience. With its grey color and luxurious feel, it is our most popular foam grade and is sure to elevate the look and feel of any seating area. Whether you're looking to upgrade your living room or design a new seating area for your office, Luxury Reflex Grey Foam is the perfect choice.

    Specification/Data Information
  • Colour - Grey
  • Density (Kg/m3) (1) 40-42
  • Hardness (N) (2) 130-160
  • Tensile (kPa-min) (4) 100
  • Elongation (% min) (4) 250
  • Our Luxury Reflex Pink Foam is a premium high-density soft foam. This foam grade is a suitable choice for the replacement of sofa back cushions (which are fibre filled or foam filled).

    Specification/Data Information
  • Colour - Orange
  • Density (Kg/m3) (1) 38-40
  • Hardness (N) (2) 100-140
  • Tensile (kPa-min) (4) 50
  • Elongation (% min) (4) 90
  • Our White Foam is a budget craft foam, that can be used for crafts projects, upholstery repairs, headboards and much more. Not suitable for sitting on!

    Specification/Data Information
  • Colour - White
  • Density (Kg/m3) (1) 24-26
  • Hardness (N) (2) 50-70
  • Tensile (kPa-min) (4) 50
  • Elongation (% min) (4) 150
  • *Please add the ratio of foams e.g. 60% Memory Foam / 40% Premium blue if selecting "Memory Foam Mixed With FS Premium 39H Blue Firm"
    Extras are a great way to add to your foam
    You should always fit stockinette to your order. In simple terms Stockinette makes it much easier to slide the foam in an out of your cover and will not only reduce creasing of fabric but prevent premature wear to both the foam and the cover - ensuring your cushions retain their shape better and last longer. Read More About Stockinette (Please Note Maximum Width for Stockinette = 135cm)
    Helps extend the lifespan of your foam cushions.
    Please note there is a minimum order of £25 on all made to measure Foam
    Grand total
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    Get the perfect fit for awkward seating layouts with Trapezium Shaped Foam Cut to Size from Intercounty Supplies. Unlike standard rectangular cushions, trapezium cushions feature angled sides that make them ideal for caravans, boats, bay window seating, corner benches, and bespoke furniture projects. If your seating space tapers or narrows at one end, a trapezium-shaped cushion provides the accurate solution you need.

    Every piece is cut using CNC profiling technology, ensuring exact dimensions and consistently clean angles. With over 30 years of experience and as one of the UK’s largest foam converters, Intercounty Supplies is the trusted choice for upholsterers, caravan manufacturers, furniture makers, and homeowners. Our foam combines comfort, durability, and accuracy, giving you cushions that not only fit perfectly but also last for years.


    Key Features & Benefits

    • Made to Measure – Foam cut precisely to your trapezium dimensions and required thickness.

    • Perfect for Angled Spaces – Tailored to fit caravans, boats, bay windows, and corner seating layouts.

    • Premium Foam Options – Choose from soft, medium, firm, high-density, or memory foam to match your comfort needs.

    • Durability Guaranteed – Designed to resist sagging, flattening, and daily wear, ensuring long-term performance.

    • Optional Upholstery Finishing – Add dacron wrap for a plush look and stockinette for protection and easy cover fitting.

    • CNC Profiling Accuracy – Guarantees that every angle is cut with precision and repeatability, even for bulk trade orders.


    Applications

    Trapezium foam cushions are highly versatile and widely used across a range of industries and home projects, including:

    • Caravan cushions and dinette seating – Perfect for angled layouts where space-saving designs are essential.

    • Boat seating and V-berth layouts – Ideal for marine use, where tapered spaces require angled cushions.

    • Bay window seat cushions – Provides a tailored, professional finish for angled window spaces.

    • Corner bench seating – Great for fitted dining or lounge areas with non-standard dimensions.

    • Custom furniture and upholstery builds – Suited for designers, upholsterers, and DIY projects needing exact shapes.

    Because of their angled profile, trapezium-shaped cushions are especially popular in caravan and boat interiors, where layouts are rarely square. They are also a top choice for homeowners wanting to transform bay windows into comfortable, stylish seating areas.


    Why Choose Intercounty Supplies?

    Since 1990, Intercounty Supplies has been one of the UK’s leading foam converters, trusted nationwide by both trade and retail customers. We combine advanced CNC technology with decades of knowledge to produce cushions that are accurate, comfortable, and long-lasting.

    Why customers choose us:

    • Over 30 years of foam converting expertise

    • CNC profiling for exact trapezium angles and perfect repeatability

    • Capacity for large-scale trade supply and one-off custom orders

    • Nationwide delivery supported by our fleet of 5 artic trucks and 15 Luton vans

    • Trusted by upholsterers, caravan manufacturers, boat builders, and furniture makers

    With our scale and expertise, you can rely on us for consistent quality and fast turnaround times, whether you’re ordering a single bay window cushion or hundreds of caravan seat pads.


    How to Order

    Ordering your Trapezium Shaped Foam Cut to Size is quick and straightforward:

    1. Measure your trapezium shape – record the top width, base width, depth, and thickness.

    2. Choose your foam grade – soft, medium, firm, high-density, or memory foam.

    3. Select finishing options – dacron wrap and stockinette for a professional look and easier cover fitting.

    4. Order Now – We’ll cut your trapezium foam with CNC accuracy and deliver it anywhere in the UK.


    FAQs

    What is trapezium shaped foam?
    It’s a cushion shape with one pair of parallel sides and one pair of angled sides, perfect for caravans, boats, bay windows, and custom furniture seating.

    Where is trapezium foam used?
    Typical applications include caravan dinette cushions, boat berths, bay window seating, and corner bench cushions.

    How do I measure for trapezium cushions?
    Measure the top width, base width, depth, and thickness. For irregular or unusual angles, providing a template, sketch, or DXF file ensures maximum accuracy.

    What foam grades are available?
    We supply trapezium cushions in soft, medium, firm, high-density, and memory foam, giving you flexibility for comfort and durability.

    Can you cut precise trapezium angles?
    Yes. Our CNC profiling machines cut angles with sharp accuracy and repeatability.

    Do I need to send a template?
    For standard trapezium shapes, measurements are usually enough. For more complex or curved versions, sending a template or sketch is recommended.

    Do you supply trade customers?
    Yes. As one of the UK’s biggest foam converters, we handle bulk trade supply for caravan and boat manufacturers, as well as one-off custom orders for retail customers.


    Order Today

    Get the right fit for awkward seating spaces with Trapezium Shaped Foam Cut to Size from Intercounty Supplies – delivering precision, durability, and comfort for over 30 years.

    👉 Order Now and get your trapezium foam cushions manufactured with CNC accuracy and delivered fast.
    💬 Unsure about measurements, templates, or foam grades? Contact Us – our expert team is here to help.

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