RHF Diagonal Square Rectangle Split Rounded Corner Mattress for Caravan, Campervan & Boat – Made to Measure with Fitted Sheets

The RHF (Right Hand Facing) diagonal square rectangle split rounded corner mattress is designed for caravan, campervan and boat layouts where the bed is made up of multiple sections and requires both shaped access and a softer, more usable edge.

This design combines a diagonal cut for clearance, a square or rectangular main sleeping area, and a rounded corner to remove harsh contact points, all built into a split mattress configuration that allows the bed to fold, lift or move as required.

It’s a practical solution for layouts that need to function — not just fit.

And like all shaped mattresses, it only works properly when the bedding follows the same configuration.

That’s why we supply both the mattress and fitted sheets made to match.

Replacement Caravan Mattress for Split Island and Storage Beds

Modern caravans often use split bed bases to allow access to storage underneath.

A replacement caravan mattress with a diagonal split and rounded corner allows you to:

• Lift or access storage without removing the mattress
• Improve access around the bed with a diagonal cut
• Remove sharp corners that get in the way
• Maintain a clean, usable sleeping surface

Standard one-piece mattresses simply don’t work in these layouts.

Fitted sheets made to match ensure the mattress stays properly positioned across all sections.

Custom Campervan Mattress for Folding and Rock & Roll Beds

Campervan beds are rarely fixed — they fold, slide or convert.

A custom campervan mattress with a split diagonal rounded design is ideal for:

• Rock and roll beds
• Fold-out sleeping platforms
• Multi-section layouts
• Tight interiors where access matters

The split allows the mattress to move with the bed, while the diagonal cut improves space and the rounded corner removes the hard edge you’d normally feel.

Fitted sheets are made alongside the mattress, so everything works together properly from the start.

Made to Measure Boat Mattress for Sectioned Cabin Layouts

Boat cabins often rely on sectional beds to maximise space and storage.

A made to measure boat mattress with a diagonal split and rounded corner allows you to:

• Work across multiple bed sections
• Maintain access to storage areas
• Fit around angled cabin layouts
• Avoid sharp edges in confined spaces

The combination of split structure and softened corner makes this particularly suited to marine environments.

Fitted sheets are produced to match the full configuration, ensuring a secure and practical fit.

Made to Measure – Sizes, Templates or Drawings

Every mattress is made to order.

You can provide your requirements in whichever way suits you:

• Standard sizes
• Exact measurements
• Full-size templates
• Drawings or sketches

If you can show us the shape and layout, we can manufacture both the mattress and fitted sheets to match it precisely.

Made to Measure Fitted Sheets for Split and Shaped Mattresses

This is where most suppliers fall apart completely.

Standard sheets are not designed for split mattresses with diagonal cuts and rounded corners. They:

• pull unevenly across joins
• lift at shaped edges
• fail to sit properly across multiple sections

Our fitted sheets are made specifically for this type of mattress:

• Cut to match both the split layout and shaped profile
• Designed to move with folding or lifting beds
• Made to match your mattress depth
• Stay in place without slipping or bunching
• Available in a range of fabrics, including cooling options

This is what makes a complex mattress usable day to day.

Foam Options for Multi-Section Mattresses

With a split mattress, foam choice matters even more.

We offer a full range of foam grades to suit different needs:

• Softer foams for comfort
• Medium grades for everyday use
• Firmer foams for durability and structure
• Memory foam options for pressure relief

Each section is built to maintain consistent support across the full sleeping surface, even where the mattress is divided.

Why Choose an RHF Diagonal Square Rectangle Split Rounded Corner Mattress?

This design is built for complex, real-world layouts:

• Works across split or hinged bed bases
• Creates access with a diagonal cut
• Removes harsh edges with a rounded corner
• Maintains a practical sleeping surface
• Ideal for caravan, campervan and boat mattresses
• Designed to work with fitted sheets made to match

It’s not just a shape — it’s a full layout solution.

Express Service Available

If you need your mattress quickly, we offer an express service on selected orders.

Ideal for upcoming trips or urgent replacements.

Covers and Finishing Options

Complete your mattress with covers designed for real use:

• Cooling covers for temperature control
• Easy to clean materials for everyday use
• Tencel covers for a softer, breathable finish

All covers and fitted sheets are made specifically to suit your mattress shape and split configuration.

Mattress and Fitted Sheets Designed Together

A complex shaped mattress only works properly when everything is made as one system.

By supplying both the mattress and fitted sheets, you get:

• A precise fit across all sections
• Better usability in real layouts
• A cleaner, more professional finish

All prices include VAT.

Related Products & Expert Support

With split and multi-section mattresses, it’s important that everything works together — not just the mattress itself.

Our Cushion Covers & Upholstery range offers made to measure options to match your seating and interior setup.

For additional sleeping areas, our Pop Top & Roof Tent Mattresses are built for compact spaces where flexibility matters.

If your setup includes a marine environment, our Boat Mattresses & Marine Foam Range provides solutions for cabins, berths and seating.

Each product is designed to support practical, working layouts — not just look good on paper.

Need Help? Speak to Someone Who Actually Knows

Split mattresses and lifting beds can be tricky to get right.

Our team understands how these setups work and can help you choose the right configuration from the start.

Get in touch with our team for clear, practical advice.