Asemly Anchor – Adjustable Trading Card Spacer

Set the exact fit. It stays there.

You've got the box organized the way you want it. You just don't have enough cards to fill it yet.

The Anchor holds your cards upright and gently compressed so foils stay flatter and stacks stop slumping. A threaded mechanism expands from 59mm to approximately 84mm and locks where you set it. No spring pushing back, no foam slowly giving up. Turn it to adjust and the contact plate stays put, so it isn't dragging across card faces or sleeves while you dial in the fit.

Foam breaks down. Springs push back. The Anchor holds.

Foil curling, warping, "pringling." Whatever you call it, it ruins cards.

Humidity swings make foils curl, and loose storage lets it happen. The Anchor applies gentle, consistent compression to help keep foils flat through seasonal changes, and to help ease existing warps back toward flat over time.

Ditch the foam

Foam is one of the worst things you can store cards against. It compresses and loses shape, traps humidity right up against your sleeves, sheds particles as it ages, and can break down into crumbs or sticky residue. Spring-style dividers avoid the foam problem but push back with whatever force the spring decides.

The Anchor does neither. One Anchor takes the place of a stack of foam inserts, and the fit you set is the fit you get.

Why collectors choose the Anchor

• Set it and forget it: Holds its position without spring tension or the slow sag of foam
• Stationary contact plate: Adjusts without spinning against card faces or sleeves
• Won't trap moisture: PETG absorbs almost nothing, so humidity isn't sitting against your cards, and it resists the shedding and residue that foam develops with age
• Built to be readjusted: Dial it in again whenever your collection changes

How it works

Drop the Anchor into your box and expand it until your cards are held firmly upright. The smooth mechanical adjustment makes it easy to fine-tune the fit for single-sleeved, double-sleeved, or mixed stacks, and just as easy to readjust as your collection grows. The open frame leaves room to tuck in a two-way humidity pack, dice, or tokens.

Will it fit?

The Anchor fills gaps from 59mm to approximately 84mm. The top of that range is a judgment call rather than a hard stop, since the two halves thread together and how much engagement feels solid is up to you.

In cards, that's roughly 150 to 210 single-sleeved. Treat those numbers as a starting point rather than a promise. Sleeve brands vary in thickness, and double or triple sleeving will change the count substantially. If you want to be certain, measure the empty space in your box.

That covers bulk boxes, storage boxes, and cardboard row boxes. It also covers deck boxes carrying less than they were built for. Running three Commander decks in a case sized for four? The Anchor takes the empty slot and helps keep the other three standing straight instead of leaning into it.

Stackable: for wider gaps, use two or more.

Sized for standard trading cards including Magic: The Gathering, Pokémon, Yu-Gi-Oh!, One Piece, Lorcana, and sports cards, sleeved or unsleeved.

Specifications

• Expansion range: 59mm to approximately 84mm
• Plate size: 50mm x 80mm
• Material: PETG, acid-free, PVC-free, chemically stable
• Weight: 1.17 oz
• 3D printed in Oklahoma

Available in

Single in white, blue, black, red, green, yellow, or gray.
5-Pack Black for organizing a larger collection.
5-Pack WUBRG with one each in white, blue, black, red, and green.

Foam breaks down. Springs push back. The Anchor holds.