Our RG50/230 White Cushions are the highest density foam available ✅. With an extra firm feel, this severe-usage grade delivers unbeatable strength, long-lasting support, and maximum durability.
Perfect for firm sofa cushions, window seats, campervans, boats, and heavy-duty upholstery projects. Order through our Foam Cut to Size service for cushions made exactly to your measurements.
Not the right fit? Explore our full range of ready-made options here:⬅️ Standard Size Foam Cushions
👉 All prices include VAT.
£11.64 – £766.91
“Not sure which grade is right for you? Read our Understanding Foam Grades Guide for expert advice.”
Our factory closes for Christmas from 19th Dec to 5th Jan, and 19th Dec is the final dispatch day.If you’d like your order to arrive before Christmas, please place it soon.
Ordering now is the simplest way to guarantee delivery before we close for the holidays.
At Foam4U, our RG50/230 White Cushions are the highest density foam we supply ✅. With an extra firm feel, this grade is engineered for severe and heavy-use applications, delivering uncompromising support and outstanding durability. Especially in cushions 4″ or thicker, it creates a super-firm seat base that stands the test of time.
Unlike standard foams that can soften, sag, or lose structure under pressure, RG50/230 offers exceptional resilience, ensuring your cushions remain firm, supportive, and hard-wearing for years to come. It’s the go-to choice when strength and durability are the top priorities.
✅ Super firm support – ideal for those who prefer a solid seat✅ Highest density grade – designed for severe everyday use✅ Exceptional resilience – resists sagging, flattening, and breakdown✅ Maximum durability – built to outperform lower-density foams✅ Excellent for thicker cushions – creates a stable, long-lasting base
🛋️ Firm Sofa & Armchair Cushions – heavy-use family furniture🌤️ Window Seats & Bay Cushions – strong support for wider bases🚐 Campervans & Caravans – dependable foam for travel and touring⛵ Boat & Marine Seating – robust enough for challenging conditions✂️ Bespoke Upholstery Projects – when only the firmest grade will do
🧰 Looking to shape or trim your new foam to size? Explore our full range of Upholstery Tools & Equipment — trusted by professionals for precision, control, and clean cuts every time.
🔪 For clean, accurate shaping, check out our selection of Knives & Foam Cutters — perfect for trimming foam blocks, profiling seat pads, and achieving that made-to-measure finish.
🔫 If you’re reupholstering furniture, our Pneumatic Staple Guns & Tackers make light work of attaching fabric securely and professionally.
💡 Ideal for both DIY users and trade professionals looking for high-quality foam cutting tools and upholstery supplies for perfect results.
20" x 22", 20" x 27", 22" x 27"
2", 3", 4", 5"
1, 5, 10, 25
© 2025 Foam 4 U | Sitemap | Privacy Policy