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

An LHF (Left Hand Facing) diagonal square rectangle split mattress is designed for caravan, campervan and boat layouts where the bed is divided into multiple sections and requires a shaped edge for access.

This type of mattress combines a diagonal cut for clearance with a square or rectangular main body, while also being split into sections to allow folding, lifting or easier handling.

It’s commonly used in campervans, caravans and boats, where bed platforms are not one solid piece and space needs to work harder.

And like all shaped mattresses, it only works properly when both the mattress and bedding follow the same configuration.

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

Replacement Caravan Mattress with Split Section and Diagonal Access

Caravan beds often include lift-up bases or split platforms for storage access.

A replacement caravan mattress with a diagonal square rectangle split design allows you to:

• Lift or access storage without removing the entire mattress
• Maintain a clean fit across multiple sections
• Improve access around the bed with a diagonal cut
• Keep a practical, comfortable sleeping surface

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

Fitted sheets are made to match the split configuration, ensuring the mattress stays usable day to day.

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 design is ideal for:

• Rock and roll beds
• Fold-out sleeping platforms
• Multi-section bed systems
• Layouts with restricted access points

The split sections allow the mattress to move with the bed, while the diagonal cut improves access and usability.

Fitted sheets are produced to match both the shape and the split, so everything works together properly.

Made to Measure Boat Mattress for Sectioned Bed Layouts

Boat cabins often use sectional bed bases to maximise storage and access.

A made to measure boat mattress with a diagonal square rectangle split allows you to:

• Work across multiple bed sections
• Maintain access to storage areas
• Fit around angled cabin layouts
• Keep a usable and comfortable sleeping surface

The split design is essential in marine environments where flexibility and access are just as important as comfort.

Fitted sheets are made to match the full configuration, ensuring a secure fit across all sections.

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 the mattress and fitted sheets to match it precisely.

Made to Measure Fitted Sheets for Split Mattresses

This is where most suppliers fall apart completely.

Standard sheets are not designed for split mattresses with angled sections. They:

• pull unevenly across joins
• come loose between sections
• fail to sit properly on diagonal edges

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

• Cut to match both the diagonal shape and split sections
• Designed to work across moving or lifting bases
• 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 split mattress practical in everyday use.

Foam Options to Suit Sectioned Mattress Use

With a split mattress, foam choice becomes even more important.

We offer a range of foam grades to suit different uses:

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

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

Why Choose a Diagonal Square Rectangle Split Mattress?

This design is built for more complex layouts:

• Works across split or hinged bed bases
• Allows access to storage without removing the mattress
• Creates space with a diagonal cut
• 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 solution for beds that need to move and function.

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 practicality
• 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 split 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.