How to frame graded cards without cracking the slab

People send us the size of the card. We need the size of the plastic. That one mix-up starts most of the graded card orders we take. A Topps card is 2.5 by 3.5 inches. The slab around it is much bigger. It is also much thicker. The thickness is what wrecks a normal frame.

Measure your slab. Charts lie.

A PSA slab runs about 3.25 by 5.25 inches. It is roughly 0.28 inch thick. An SGC slab is close to the same footprint, with the black core inside. A BGS slab is the big one at about 3.5 by 5.75 inches, and it is thicker again.

Those are starting points. PSA has changed holders over the years. An older PSA holder does not match a new one. Pull out a caliper or a steel rule and measure the slab in your hand.

Write down the width and the height. Then measure the thickness twice. That last number is the one people forget. It decides the frame.

Never crack the slab open

Some people want the card out of the plastic so it sits flat. Do not do it. The grade lives with the holder. Crack it and the grade is gone.

A PSA 9 in the holder is worth real money. The same card loose in a sleeve is just a card. You would be paying a framer to destroy the thing you paid to grade. We turn that request down every time.

Depth is the whole problem

A photo is paper. It lies flat, so the frame closes.

A slab is a plastic brick. The slot inside a frame that holds everything is called the rabbet. A common rabbet is about 1/4 inch deep. The glazing and the mat already fill most of that. Now add 0.28 inch of holder. The back bows out and the clips will not shut.

So you buy depth on purpose. Two ways to get it. Use a shadow box, or use a frame with a deep rabbet. A shadow box with 3/4 inch of interior depth handles a PSA slab with room left over. A BGS slab wants closer to a full inch.

Skip the glue. Use the mat.

We get asked about tape and glue dots a lot. No. Adhesive on a slab is a bad idea, and it does not hold well anyway.

Tape residue on the holder label is ugly. If you ever sell the card, the buyer sees it. Worse, sticky stuff lets go in the heat behind glazing. Then your $600 card slides to the bottom of the frame.

Hold the slab with the mat instead. Cut the mat opening a little smaller than the slab. The mat laps over the edge and traps the slab against the backing. Nothing touches the front of the holder. Nothing has to be undone later.

For a standard PSA slab, we cut the opening 3 by 5 inches. The slab is 3.25 by 5.25. That leaves 1/8 inch of mat lapping over each edge. An eighth of an inch is enough to hold it. It is small enough that the mat does not eat the label. You still read the grade and the cert number.

Then the borders set the frame size. Put 2.5 inches of mat on all four sides of that opening. You land on an 8 by 10 frame. That is the size we cut most often for a single card.

The slab should not rattle

A slab held only by a mat lip can shift a hair when you hang the frame. We fix that under the mat, never on top of it.

In a shadow box we cut a well into the foam backing. The well runs 3.3 by 5.3 inches for a PSA slab. The slab drops in with a hair of play and the mat lip covers the gap. It sits in a pocket and cannot travel.

Building it yourself? Four strips of acid-free foam board around the slab do the same job. Cut them to the slab thickness. Keep them off the label.

UV acrylic earns its price here

Cardboard fades. Ink fades. A 1986 card with a sunburned red border is worth less than the same card that stayed dark.

The slab does very little for UV. It is a holder, not sunscreen. UV acrylic in the frame stops about 99% of ultraviolet light. On a card you paid to grade, that upgrade is cheap insurance.

Acrylic beats glass here for a second reason. It weighs about half as much and it will not shatter. No reason to hang glass over a desk.

Two slabs, four slabs, or six

Rookie runs look better together than apart. A mat with more than one opening does that job.

Four slabs in a 2 by 2 grid is our most requested layout. With 3 by 5 openings and 1 inch between them, the art area is 7 by 11 inches. Add 2.5 inch borders and you get a 12 by 16 frame.

Six slabs, three across and two down, come out to 11 by 11 inches of art. That lands on a 16 by 16 frame. Odd counts work too. One card centered over a row of three is fine. So is a single slab with room to add more later.

What we would order for a graded rookie

Here is our default. Black mat, 3 by 5 opening, 8 by 10 solid pine frame in a dark stain, UV acrylic.

Black mat, because the slab edges disappear into it. Dark wood, because a bright frame competes with the card art. We have cut pine to order in our New Jersey shop since 2014. After 516 reviews, the plain dark frame is still the one nobody regrets. Our graded card frames are built around these depths.

Questions we hear a lot

Will a store-bought frame fit a PSA slab?

Almost never. Off the shelf frames are built for paper and photos. The rabbet is too shallow for 0.28 inch of plastic. You can sometimes force the back on, but the frame bows and the clips pop off in a month.

Can I frame a BGS slab and a PSA slab in the same frame?

Yes, and we do it often. The holders are different sizes, so each one needs its own mat opening. We cut a 3 by 5 opening for the PSA and a larger one for the BGS. Both slabs need the depth of the thicker holder, so the frame gets sized to the BGS.

Do I need to take the slab out to clean it?

No. Wipe the outside of the holder with a dry microfiber cloth before it goes in. Skip the glass cleaner, since ammonia hazes the plastic. Once the frame is closed, the slab stays clean for years.