RHF Cutaway Mattress

How to order a RHF Cutaway Mattress in 5 simple steps

  1.  Choose cm’s  mm’s or inches.
  2. Enter Your sizes in the boxes provided.
  3.  Choose foam grade from drop down menu.
  4.  Add Covers & Sheets as required.
  5. Review your order and add to cart.
Custom shape fitted sheet being fitted onto a shaped campervan mattress with elasticated corner
🚚 Upgrade to Express Delivery – Get Your Mattress in Just 10  Working Days!

Not the shape you had in mind?

No problem — Lets start again 

Measurements

Measurements

Reference Image

Choose Your Comfort Level

BUDGET MATTRESS FOAM (V28)

This lightweight foam is best suited for occasional-use only,  We wouldn’t recommend it for everyday use or situations where long-term support is essential. Keep in mind—thicker, higher-volume mattresses naturally offer more support than thinner ones, regardless of the foam grade.

Properties
Comfort Level : Not Specified ,
Density: MEDIUM/LOW
Recommendations: Occasional use only !

STANDARD FIRM MATTRESS FOAM RX33/190

This medium-density, firm mattress foam  Ideal for mattresses around 3–4 inches thick, offering reliable support and durability. Just a heads-up—it may feel a bit too firm for those who prefer a softer sleeping surface. Keep in mind—thicker, higher-volume mattresses naturally offer more support than thinner ones, regardless of the foam grade.

Grade
RX33/190
Notional Hardness
190 N
Density
33 kg / m3
Properties
Comfort Level : FIRM
Density: MEDIUM

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

ORTHOPAEDIC HIGH DENSITY MATTRESS FOAM RX39/200

Most popular High density firm foam mattresses. Best choice for cushions 3–4 inches thick. May be too firm for cushions above 5” in thickness.  Keep in mind—thicker mattresses offer more support than thinner ones, regardless of foam grade.

Grade
RX39/200
Notional Hardness
200 N
Density
39 kg / m3
Properties
Comfort level ; FIRM
Density; HIGH

COMFORT MEDIUM FIRM HIGH DENSITY MATTRESS FOAM RX41/150

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 mattress. Keep in mind—thicker mattresses offer more support than thinner ones, regardless of foam grade.

Grade
RX41/150
Notional Hardness
150 N
Density
40 kg / m3
Properties
Comfort level : MEDIUM FIRM for mattress over 4"(10cm ) in thickness
Density: HIGH

STANDARD MEMORY FOAM MATTRESS TOPPER SFV40

Incorporating Visco Elastic memory foam into your bedding solutions offers enhanced comfort and support, catering to various applications from home to travel.

Grade
SFV40
Room Temp. Hardness
60 N
Density
40 kg / m3
Properties
Comfort Level: SOFT
Density : HIGH

COOLING GELFLEX MEMORY FOAM MATTRESS TOPPER

GelFlex memory foam is a modern, gel-infused foam designed for mattress toppers where cooler sleep matters.It provides pressure-relieving comfort with a more responsive feel than traditional memory foam.The gel infusion helps reduce heat build-up, making it ideal for warmer sleepers.Perfect for upgrading comfort without creating an overly soft or sink-in feel.

Density
50 kg / m3
Properties
Comfort Level : MEDIUM
Density : HIGH

ORTHO MEMORY FOAM MATTRESS COMBO RX39/200 BASE WITH 1" (2.5CM) MEMORY

Firm V38 base foam bonded to 1″ of Vasco 50 memory foam softens the feel, of the mattress, making what would typically be a firm mattress more comfortable.  Keep in mind—thicker, higher-volume mattresses naturally offer more support than thinner ones, regardless of the foam grade.

Properties
Comfort level : FIRM
Density; HIGH
Minimum Mattress Thickness : Must be over 2" (5cm ) or only memory foam element will be supplied

ORTHO PLUS MEMORY FOAM MATTRESS COMBO RX39/200 BLUE BASE TOPPED WITH 2" (5CM) MEMORY

Firm V38 base foam bonded to 2″ of Vasco 50 memory foam softens the feel, of the mattress, making what would typically be a firm mattress more comfortable.  Keep in mind—thicker, higher-volume mattresses naturally offer more support than thinner ones, regardless of the foam grade.

Properties
Comfort Level; FIRM/MEDIUM
Density; HIGH
Minimum Mattress Thickness : Must be over 2" (5cm ) or only memory foam element will be supplied

COMFORT MEMORY FOAM MATTRESS COMBO RX41/150 BASE TOPPED WITH 1" (2.5CM ) MEMORY

Comfort memory foam mattress combo featuring a supportive Reflex 40 grey base topped with 1″ (2.5cm) of plush memory foam for added pressure relief and comfort.

Grade
RELEX 40 /150
Notional Hardness
150 N
Density
40 kg / m3
Properties
Comfort Level : MEADIUM FIRM
Density: HIGH
Minimum Mattress Thickness : Must be over 1" (2.5cm ) or only memory foam element will be supplied

COMFORT PLUS MEMORY FOAM MATTRESS COMBO RX41/150 BASE TOPPED WITH 2" (5CM ) MEMORY

Comfort Plus Mattress Combo features a supportive Reflex 40 grey foam base topped with 2″ (5cm) of pressure-relieving memory foam.Offers the perfect balance of firm support and plush comfort for a restful night’s sleep.  Ideal for everyday use, guest beds, or custom spaces like campervans and caravans.

Grade
REFLEX 40/150
Notional Hardness
150 N
Density
40 kg / m3
Properties
Comfort Level: MEDIUM FIRM
Density: HIGH
Minimum Mattress Thickness : Must be over 2" (5cm ) or only memory foam element will be supplied

ULTRA FIRM MATTRESS FOAM RG50/230

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

GELFEX ORTHO FIRM

GelFlex Ortho Firm combines a 2″ (5 cm) layer of GelFlex gel-infused memory foam for cooling comfort and pressure relief.with our firmest high-density RX33/190 foam base for maximum support and stability assuming orders over 5cm 🔴 Firm – Maximum support for back & stomach sleepers

Grade
Gelflex + 33/190

GELFLEX MEDIUM

GelFlex Medium-Firm combines a 2″ (5 cm) layer of GelFlex gel-infused memory foam for cooling comfort and pressure relief.  & high-density medium-firm 41/150 foam base for stronger support and improved weight distribution, assuming orders over 5cm thickness 🔵 Medium (Most Popular) – Balanced support for back sleepers & couples

Grade
Gelflex + 41/150

GELFLEX SOFT

GelFlex Soft combines a 2″ (5 cm) layer of GelFlex gel-infused memory foam for cooling comfort and pressure reliefwith a high-density medium-soft RX39/120 foam base for stable, long-lasting support, assuming orders over 5cm thickness 🟢 Soft – Plush, contouring comfort for side sleepers  

Grade
Gelflex + 39/120
  • Tencel mattress with breathable cover and cooling design Tencel mattress with a naturally breathable cover designed to help regulate temperature and improve sleep comfort.

    Add a drawing if required 

    • (max file size 128 MB)

    🚚 Upgrade to our Express Delivery – We'll Dispatch your Mattress in Just 10 Working Days.

  • Recommend Upgrade

    Why upgrade to GelFlex?

    GelFlex is gel-infused cooling memory foam engineered for better sleep

    • ❄️ Sleeps cooler than standard memory foam

    • 🛌 Relieves pressure on hips, shoulders & back

    • 📐 Improves spinal alignment in any sleeping position

    • ✂️ Made to measure — any size, any shape

    GelFlex Memory foam


     

Your Created Product

Measurements

Choose Your Comfort Level

FROM £7.00

Description

RHF Rectangle with Cutaway Made to Measure Mattress – Custom Built to Your Specification

This mattress is custom made to measure in the UK, built to your exact dimensions for a precise fit.

Designed for right-hand front (RHF) rectangle layouts with a cutaway section, this shape retains a largely rectangular sleeping surface while incorporating a defined section removed from one corner, allowing the mattress to fit around furniture, walls or access areas.

Each mattress is manufactured to your individual specification, ensuring it fits cleanly within your layout with no gaps, overhang or wasted space.


📏 Is This the Right Mattress Shape?

This option is suitable if your mattress:

✔ Is mostly rectangular in shape
✔ Has a cutaway section on the right-hand front corner
✔ Needs to fit around fixed furniture or restricted spaces
✔ Requires improved access without redesigning the full mattress

Common applications include:

  • Campervan side conversion beds
  • Motorhome layouts with access corners removed
  • Caravan beds with fitted wardrobes or units
  • Boat cabin mattresses with structural constraints

If your mattress is rectangular but needs part of a corner removed, this is the correct option.


⚠️ When This Product Is NOT Suitable

This option is not suitable if your mattress:

✖ Has a diagonal (angled) cut
✖ Uses a curved or rounded cutaway
✖ Is fully square or rectangular with no shaping
✖ Requires multiple or complex cut sections

If your layout uses angled or curved shaping, a diagonal cut-off or curved cutaway mattress will be more suitable.


🔄 Built for Practical Replacement & Space-Saving Layouts

Rectangle with cutaway mattresses are commonly used where a standard rectangular mattress does not fit due to obstructions.

A made to measure replacement allows you to:

  • Retain a full-width sleeping surface where possible
  • Fit precisely around fixed features
  • Improve usability without altering your layout

This makes it one of the most practical upgrades for awkward spaces.


🧩 Why Rectangle with Cutaway Designs Are Used

This design removes a section of the mattress while keeping the majority of the rectangular form intact.

This helps to:

  • Maximise usable sleeping area
  • Improve access around the bed
  • Adapt standard layouts to non-standard spaces

It offers a balance between comfort and practicality.


🧠 Choosing the Right Comfort Level

With a largely uninterrupted sleeping surface, consistent support across the mattress is important.

High Density Reflex Foam
Provides firm, even support and durability.

Memory Foam (SFV50 Premium Grade)
Adds a softer surface feel and improved pressure relief.

GelFlex Foam
A gel-infused foam designed to improve cooling and provide enhanced pressure relief, helping regulate temperature in warmer conditions.

All options are available in multiple firmness levels.


🛏️ Removable Covers for Practical Use

All mattresses are supplied with removable, washable covers, designed for real-world use.

✔ Easy to remove and clean
✔ Durable for regular use
✔ Suitable for compact interiors


💧 Managing Condensation & Airflow

In enclosed environments such as campervans, motorhomes, caravans and boats, airflow beneath the mattress is important.

Using an Airmat Spacer Mesh helps improve ventilation and reduce moisture build-up over time.


🔧 Typical Applications

This type of mattress is commonly used for:

It is best suited to layouts where a standard rectangular mattress needs adapting to fit the available space.


➕ Optional Add-Ons

You can enhance your setup with:


🇬🇧 Made to Measure in the UK

Every mattress is manufactured in the UK and built to your exact specification, ensuring a precise and reliable fit.


📞 Need Help?

If you’re unsure how to measure your cutaway or whether this is the correct option, get in touch before ordering.

We’ll help you choose the right shape.

 

 

Our sister website www.thefoamshop.co.uk

You may also like…