• Sleep Box Spring Foundation (Twin XL)
  • Sleep Box Spring Foundation
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Jonine’s Corner

Sleep Box Spring Foundation (Twin XL)

$390.99
$390.99
Shipping calculated at checkout.
Title

A great mattress is only as good as what's underneath it.

The Sleep Box Spring Foundation gives your Twin XL mattress the solid, even support it needs to perform at its best — and last longer. Low-profile and sturdy, it sits quietly beneath your mattress, reducing motion transfer and keeping everything exactly where it should be.

Simple to set up. Built to last. The foundation your sleep deserves.

Why it works:

  • Solid support — evenly distributes weight for consistent mattress performance
  • Reduces motion transfer — less disturbance for a more restful night
  • Extends mattress life — proper support prevents premature sagging
  • Low-profile design — works with most bed frames and platform bases
  • Easy assembly — straightforward setup, no tools required

Fits:

Twin XL mattresses. Compatible with most standard bed frames.

✅ Free Shipping    ✅ 30-Day Returns    ✅ Secure Checkout    ✅ Curated with Care

Curated with intention by Jonine's Corner — for homes that feel, not just look beautiful.

Shipping

Free delivery on orders over $75. Standard shipping 5–10 business days. Furniture items ship via freight — you'll receive a tracking number once dispatched.
Returns

We accept returns within 30 days of delivery. Items must be unused and in original packaging. Contact support@joninescorner.com to start a return.
Quality Promise

Every item is inspected before it ships. If your order arrives damaged, we'll make it right — no questions asked.
Shipping information

- No EU import duties.
- Ships within 1-2 business days.
- Ships in our fully recyclable and biodegradable signature boxes.
    Sleep Box Spring Foundation (Twin XL)
    Sleep Box Spring Foundation

    Materials

    Steel coil spring frame with a fabric-covered exterior. Built for long-term durability under daily use.

    Care

    Spot clean the fabric cover with a lightly damp cloth if needed. Do not machine wash. Keep dry and away from moisture.

    • Size: Twin XL (38 x 80 in)
    • Construction: steel coil spring frame
    • Cover: fabric exterior
    • Weight: approx. 40–50 lbs
    • Compatible with most standard bed frames
    • Easy assembly — no tools required

    Do I need a box spring if I have a platform bed?

    Platform beds typically don't require a box spring. This foundation is best suited for traditional bed frames with side rails.

    Will it fit a standard Twin XL mattress?

    Yes — it's sized for standard Twin XL mattresses (38 x 80 in), commonly used in dorm rooms and adjustable bed setups.

    Is assembly required?

    Minimal assembly may be required. No tools are needed and setup is straightforward.

    Twin XL: 38 x 80 in (standard)

    Steel coil spring frame, fabric cover

    Approx. 40–50 lbs

    Spot clean fabric cover with a damp cloth; do not machine wash; keep dry

    China