Graded Slab Sizes: PSA vs BGS vs SGC vs CGC vs TAG

PSA, CGC, and TAG slabs share almost the same footprint, about 135 × 80 mm (5.3 × 3.15 in). What separates them is thickness. BGS slabs are shorter, wider, and thicker. SGC slabs are the biggest in every direction. PSA is the thinnest slab at 6.25 mm, and BGS and SGC tie for thickest at 8.5 mm.

Grader	Height	Width	Thickness
PSA	135.75 mm (5.34 in)	80.25 mm (3.16 in)	6.25 mm (0.25 in)
BGS	130.75 mm (5.15 in)	83.00 mm (3.27 in)	8.50 mm (0.33 in)
SGC	138.50 mm (5.45 in)	86.25 mm (3.40 in)	8.50 mm (0.33 in)
CGC	135.00 mm (5.31 in)	80.25 mm (3.16 in)	7.50 mm (0.30 in)
TAG	134.75 mm (5.31 in)	80.00 mm (3.15 in)	7.25 mm (0.29 in)

Outside dimensions of each grader's current standard holder for standard-thickness cards. Thickness is measured at the thickest point, including the stacking ridge on the back.

Side by side, to scale

Same scale, bottom aligned. The dashed outline on each slab is PSA, so you can see exactly where each one overhangs or comes up short.

Height × width in mm.

Biggest, smallest, thickest

Biggest overall: SGC. It's 2.75 mm taller, 6 mm wider, and 2.25 mm thicker than PSA.
Shortest: BGS, about 5 mm shorter than PSA.
Widest: SGC at 86.25 mm, then BGS at 83 mm.
Thinnest: PSA at 6.25 mm.
Thickest standard holders: BGS and SGC, tied at 8.5 mm.
Closest match: PSA, CGC, and TAG. Height and width are within 1 mm of each other. Thickness is the only real difference.

Will my slab fit something made for another brand?

The rule of thumb: gear made for a bigger slab holds a smaller one, loosely. Gear made for a smaller slab won't hold a bigger one. Here's every combination of standard holders, checked against the numbers above.

Your slab	Made for PSA	Made for BGS	Made for SGC	Made for CGC	Made for TAG
PSA	Exact	No: 5.00 mm too tall	Loose	Tight (0.75 mm too tall)	No: 1.00 mm too tall
BGS	No: too wide, too thick	Exact	Loose	No: too wide, too thick	No: too wide, too thick
SGC	No: too big all around	No: too tall, too wide	Exact	No: too big all around	No: too big all around
CGC	Footprint yes, 1.25 mm too thick	No: 4.25 mm too tall	Loose	Exact	Tight (0.25 mm over)
TAG	Footprint yes, 1.00 mm too thick	No: 4.00 mm too tall	Loose	Yes	Exact

Yes: smaller or equal in every direction, close fit.
Loose: fits, with more than 1.5 mm of play. Expect it to slide or rattle.
Tight: less than 1 mm over. Depends on how much clearance the accessory was built with, so it can go either way.
Footprint yes, too thick: fits sleeves and open frames. Won't seat in cases, slots, or lipped bumpers cut to the other grader's depth.
No: too big in height or width.

This is a paper check. Accessories are built with a little clearance, usually a fraction of a millimeter, and holders vary slightly between generations. Sleeves stretch. Hard plastic doesn't.

Which dimension matters depends on the gear

Sleeves: height and width matter, thickness barely does. This is why PSA, CGC, and TAG often share sleeves.
Bumpers and frames: the outline matters most. Thickness matters only if the frame wraps over the front or back of the slab.
Magnetic cases, one-touch cases, and slotted stands: built to a thickness. A CGC or TAG slab in a cavity cut for PSA is 1 to 1.25 mm too thick and won't close or seat.
Storage boxes: width decides whether a slab fits the row at all. Thickness decides how many fit.

The cross-brand questions people actually ask

Are PSA, CGC, and TAG slabs the same size?

Almost, in height and width. All three land within 1 mm of each other at roughly 135 × 80 mm (5.3 × 3.15 in). Thickness is where they split: PSA is 6.25 mm, TAG is 7.25 mm, and CGC is 7.5 mm.

Will a TAG slab fit in a PSA bumper or case?

On footprint, yes. A TAG slab is 1 mm shorter and a quarter millimeter narrower than PSA, so it sits slightly loose in anything cut to the PSA outline. The catch is thickness: TAG is 1 mm thicker. Sleeves and open frames handle that fine. A bumper with lips that wrap the front and back, or a magnetic case cut to PSA depth, may not close over it.

Will a CGC slab fit in a PSA sleeve or case?

Sleeves, usually, though snug. CGC is the same width as PSA and 0.75 mm shorter. Rigid cases cut to PSA depth are a different story: CGC is 1.25 mm thicker, the biggest thickness gap of the three look-alikes, so it often won't seat or close.

Will a BGS slab fit in a PSA box, stand, or case?

Usually not. BGS is 2.75 mm wider and 2.25 mm thicker than PSA, so slots and cavities cut for PSA bind. It doesn't work the other way either: a PSA slab is 5 mm taller than BGS. PSA and BGS gear doesn't swap in either direction.

Will an SGC slab fit anything made for PSA?

No. SGC is bigger than PSA in every direction: 2.75 mm taller, 6 mm wider, and 2.25 mm thicker. It's the one slab that always needs grader-specific gear. The flip side is useful: anything sized for SGC will hold every other standard slab, just loosely.

Which grading company has the biggest slab?

SGC, by every measure: tallest at 138.5 mm, widest at 86.25 mm, and tied with BGS for thickest at 8.5 mm. BGS is the shortest slab at 130.75 mm. PSA is the thinnest at 6.25 mm.

Why are BGS slabs so thick?

Beckett seals the card in an inner sleeve inside a heavy, welded holder. The result is a standard BGS slab about 8.5 mm thick, roughly 36 percent thicker than a PSA slab.

Thick, tall boy, and oversized holders

Thick holders mostly keep the standard footprint and just get deeper, so they still fit most storage rows but not cases or slots cut for standard thickness.

Thick holder	Height × width × thickness	Notes
PSA	135.75 × 80.25 × 10.25 mm (5.34 × 3.16 × 0.40 in)	For cards over 40pt. PSA picks the holder.
BGS	130.75 × 83.00 × 8.50 mm (5.15 × 3.27 × 0.33 in)	Measured the same as standard. Autograph and patch slabs can run thicker.
SGC	138.50 × 86.25 × 9.50 mm (5.45 × 3.40 × 0.37 in)	Same footprint as standard, 1 mm deeper.
CGC	135.00 × 80.25 × 12.50 mm (5.31 × 3.16 × 0.49 in)	CGC makes thick holders in more than one depth. This is one of them.
TAG	None	TAG grades cards up to 50pt and doesn't offer a thick holder.

Tall boy holder	Height × width × thickness
PSA	183.75 × 107.50 × 7.35 mm (7.23 × 4.23 × 0.29 in)
BGS	181.50 × 115.00 × 9.15 mm (7.15 × 4.53 × 0.36 in)
SGC	184.25 × 101.50 × 7.50 mm (7.25 × 4.00 × 0.30 in)
CGC	195.00 × 113.50 × 10.00 mm (7.68 × 4.47 × 0.39 in)

Tall boy holders are not interchangeable. CGC's, added in December 2025, is more than 11 mm taller than PSA's. PSA's Jumbo holder for oversized items is listed by PSA at 9.73 × 13.21 × 0.322 in (247.1 × 335.5 × 8.2 mm).

How many slabs fit in a 12-inch row

Standing on edge, bare, and nested on their stacking ridges. This is the number that matters when you're buying a storage box.

Grader	Bare	Sleeved
PSA	55	47
TAG	47	40
CGC	43	39
SGC	42	35
BGS	38	35

A box that holds 55 PSA slabs holds about 38 BGS slabs. If a listing gives one capacity number for every grader, it's quoting PSA.

Why slab sizes online don't agree

Card size posted as slab size. 2.5 × 3.5 in is the card, not the slab.
Inside posted as outside. PSA's 2 11/16 × 3 13/16 in describes the space for the card, not the holder.
Rounding. Rounding to the nearest 1/16 or 1/8 inch can put a number 2 mm off.
The stacking ridge. Measuring with or without the ridge on the back changes thickness by up to 1.4 mm.
Holder generations. The same grader's holders can vary by a few tenths of a millimeter from one generation to the next.

Where these numbers come from

PSA, Beckett, and SGC don't publish outside holder dimensions. CGC lists its holder at approximately 3.15 × 5.30 in, and TAG lists 5.25 × 3.125 in. The numbers on this page come from digital caliper measurements published by Card Capsule (three samples per holder type, agreeing within 0.01 mm), including their stacking measurements and row counts. They line up with CGC's and TAG's published figures to within about 1.5 mm, and with fit sizes published by frame and case makers.

If you're designing or buying something with a tight fit, caliper your own slab first. Holder generations vary, and a few tenths of a millimeter is the difference between snug and stuck.

Slabster gear and these sizes

Every Slabster bumper is sized to one grader's standard holder: PSA, BGS, SGC, or CGC. Match the bumper to the slab. Shop bumpers.

Our display risers take slabs up to 9 mm thick, so every standard holder on this page seats, including BGS and SGC at 8.5 mm. Thick holders don't. How many risers fit in a Zion case.

Collecting TAG? We don't make TAG-specific gear yet. Tell us if you want it.