Have you ever wondered exactly all what’s involved in couch design with respect to all the different parts of a couch. It’s a fairly complex piece of furniture.
There are many parts both on the exterior and interior. We decided to dig in and get to the bottom of the anatomy of a sofa and put together a custom diagram showing you all the different components to a couch design. Below is our diagram that includes a very informative cross-section so you get a glimpse of what’s inside a typical sofa.
Enjoy (and if you think this is useful or cool, please pin and share).
Related To: Sofa Accessories | Types of Sofa Cushions | Types of Upholstery Fabric | Parts of a Chair | Couches with USB Ports
Table of Contents
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Parts of a Couch (Diagram)
Sofa Exterior Components
- Cushion Boxing: Typically made up of two or three cushions usually firmer than the back cushions to support the weight of the sitter.
- Arm Panel: An armrest that has an either inset or raised panel covered to the front of the arm.
- Throw Pillow: Small pillow on a chair used chiefly for decorative purposes.
- Back Pillows: Back cushions that keep the sitter comfortable and improve posture while seated.
- Top Cushion: Chief cushion to sit on.
- Inside Arm: The arm frame without the cover or upholstery.
- Inside Back: Area from the top of the seat cushion to the back.
- Outside Back: The upholstered part from the top of the seat to the foot of the sofa.
- Outside Arm: The upholstered part of the armrest.
- “T”: The cushion resembles a chunky letter “T.”
- Side Skirt: Fabric covering found at the sides by the foot of the sofa.
- Corner Skirt Panel: The pleated part of the fabric covering found at the corner by the foot of the sofa.
- Front Skirt: Fabric covering found at the front by the foot of the sofa.
- “T” Seat Cushion: The seat cushion that resembles a chunky letter “T” where extensions of the cushion cover the sofa’s front sides and under the armrests.
- Front Skirt Panel: The pleated part of the fabric covering found by the front of the foot of the sofa.
- Seat Cushion: A soft padding that makes sitting comfortable.
- Cushion Reverse: The bottom part of the cushion boxing.
- Welt: A fabric-covered rope stitched along the seams of an upholstery for a more tailored look.
- Arm: Where the sitter can comfortably rest his/her arm while sitting.
- Leather of Fabric: Sofa covering.
- High Rebound Sponge: Sponge that has higher than 45 density.
- Backrest: Supports a person’s back when seated.
Sofa Interior Parts
- Mid-Soft Sponge: Sponge that has a density not suitable for sitting.
- Parallel Net: Inside net placed parallel along the wood frame.
- Crest Rail: Top rail of a chair back.
- Composite Splint: Makes the framework of the arm and side of a sofa.
- Wood Frame: Skeleton of the sofa.
- Serpentine Spring: Spring that runs from front to back or from top to bottom.
- Stainless Steel Foot: Foot of the sofa that raises it from the floor.
- Parallel Hardware: Steelwork underneath the inside of a sofa.
- Webbing Bridge: Used for holding webbing to flat surfaces.
- Fixed Sponge: Placed at the most bottom level of the inside of the sofa.
- Density Sponge: Adds support and durability underneath.
- Doll Cotton: Spray-bonded cotton
- High Density Resilient Sponge: Makes a cozy and durable seating.