---
title: "Top Loader Sizes: 35pt to 360pt and What Fits"
description: "Top loader sizes explained: what 35pt, 55pt and 130pt mean in mm, which card goes in which holder, and how to size a display slot for top loaders and slabs."
category: "Buyer Guide"
author: "Deniz Chen"
authorCredential: "QC Manager at Wetop Acrylic — leading 4-stage quality inspection since 2016, 1,000+ custom orders inspected piece-by-piece before ship"
datePublished: 2026-10-14
dateModified: 2026-10-14
primaryKeyword: "top loader sizes"
url: https://wetopacrylic.com/guide/top-loader-sizes-card-holders/
---
## Top loader sizes in one chart {#size-chart}

Top loader sizes are named in points (pt), and one point is a thousandth of an inch.[^setscribe] The rating is the thickest card the holder takes, so a 35pt top loader fits cards up to 0.035 in, or 0.89 mm. A regular top loader is 3 × 4 inches on the outside and is made for 2.5 × 3.5 inch standard cards.[^ultrapro-toploader]

The 2.5 × 3.5 inch card has been the basic sports card format since Topps settled on it in 1957,[^wiki-card] which is why most holders share one face size and differ only in depth. The chart converts each common rating to millimeters and lists the card stock the rating usually serves.

| Holder rating | Card thickness it takes (in) | Card thickness it takes (mm) | Typical cards |
|---|---|---|---|
| 23pt | 0.023 | 0.58 | Thin or older stock |
| 35pt | 0.035 | 0.89 | Standard base cards |
| 55pt | 0.055 | 1.40 | Chrome and thicker stock |
| 75pt | 0.075 | 1.91 | Thick autograph and memorabilia cards |
| 100pt | 0.100 | 2.54 | Patch and relic cards |
| 130pt | 0.130 | 3.30 | Thick patch autographs |
| 180pt | 0.180 | 4.57 | Very thick memorabilia cards |
| 260pt | 0.260 | 6.60 | Oversize relic pieces |
| 360pt | 0.360 | 9.14 | The thickest relic cards |

The millimeter column is the inch value times 25.4. The "typical cards" column is a starting point, not a rule. Card makers vary stock thickness within one product line, so the measured card decides the holder.

## How to pick a size: measure, then round up {#pick-a-size}

Measure the card with calipers at the thickest point, including any patch or embedded piece. Pick the smallest holder rating at or above that reading. A card that needs force to slide in, or that bows the holder, needs the next size up, because a tight fit scuffs edges and corners every time the card goes in or out.

A 35pt top loader suits ordinary base cards and most game cards in a penny sleeve. Thicker chrome cards and many autographs move to 55pt or 75pt. Patch and relic cards start around 100pt and climb to 180pt and above.[^setscribe] Reading the pack label and the card's measured thickness side by side avoids most fit problems.

The same logic holds for magnetic holders. Ultra PRO's ONE-TOUCH range runs 23, 35, 55, 75, 100, 130, 180, 200, 260 and 360pt, for standard 2.5 × 3.5 inch cards,[^ultrapro-onetouch] and other brands publish similar ladders. A holder that is too deep lets the card slide and rattle; one that is too shallow presses on the card face.

## 35pt vs 55pt: which one you need {#35pt-vs-55pt}

Use 35pt for standard base cards and 55pt for thicker cards. The difference is 0.020 in, about half a millimeter, and it decides whether a thick card slides in freely or catches its corners. A 55pt top loader is also slightly thicker on the outside, which changes the slot width of any stand built for it.

Mixed collections often hold both. A card shop that sells base cards in 35pt and chrome singles in 55pt has two holder thicknesses on one counter. That is the first thing a display has to account for.

## Top loader, magnetic holder and graded slab are three different objects {#three-holders}

A top loader is a thin, rigid PVC sleeve open at one end. A magnetic holder is two thick plates with a recess for the card and magnets that close it. A graded slab is a sealed case from a grading company, with a label above the card. All three can carry the same card, but their outside dimensions differ widely.

| Holder | Construction | Outside size | What sets its thickness |
|---|---|---|---|
| Top loader | Rigid PVC sleeve, open top | About 3 × 4 in for the regular size | The pt rating plus two thin walls |
| Magnetic holder | Two plates with a card recess and magnets | Varies by brand and rating | Plate thickness, much larger than the pt rating |
| Graded slab | Sealed hard case with a grader's label | About 81 × 136 × 6.5 mm for a PSA slab | The grading company's holder design |

Slab sizes differ by grader. A PSA slab measures about 81 × 136 × 6.5 mm and a BGS slab is about 8 mm thick. The [PSA slab dimensions guide](/guide/psa-slab-dimensions/) compares PSA, BGS, SGC and CGC side by side.

For a display buyer, the pt rating describes the card inside, not the outside of the holder. A 35pt magnetic holder is far thicker than 0.89 mm. Measure the holder itself before sizing any slot or recess around it.

## Sizing a display slot for each holder {#slot-sizing}

Cut a display slot from the measured outside of the holder, then add about 0.5 mm of total clearance. That is the clearance we use on [graded card display cases](/products/acrylic-cases/graded-card-display-cases/): enough to seat and lift the holder freely, tight enough that it does not lean or rattle in transit.

Holder batches vary slightly, and two brands rated at the same pt can differ on the outside. For that reason we cut slots from a holder the buyer mails in, or from caliper readings the buyer sends, and check the fit on the paid sample before any production run. A stand built from a size printed on a pack can end up a fraction of a millimeter too tight.

Slot depth matters too. A top loader stands taller than a slab's card window, so a slot deep enough to hold a slab steady may cover the bottom of a card in a top loader. The drawing records slot width, depth and the visible area for each holder type.

## One stand for top loaders and slabs {#mixed-stands}

A single acrylic stand can carry top loaders, magnetic holders and graded slabs if each slot is cut for its own holder. A mixed stand has slots of different widths side by side, and often a different depth for each. Label the positions on the drawing so the shop staff know which holder goes where.

A common request is a counter stand that holds one slab and a few top-loaded singles beside it, or a stand that swaps between the two. Swapping holders in the same slot does not work well. A slot sized for a 6.5 mm slab lets a top loader fall forward, and a slot sized for a top loader will not take a slab. Separate slots, or a removable insert per holder type, are the reliable options.

## What we make, and what we do not {#what-we-make}

We do not make PVC top loaders, penny sleeves or card savers. These are mass-produced in PVC or polypropylene, and that is not what we build. We make the premium version: thick polished acrylic card holders with a magnetic or screw-down closure, a logo or a printed or colored backing, and an optional UV-filtering sheet, from 100 pieces per design. We also build the displays around holders and slabs: card stands, multi-slot blocks, [graded card display cases](/products/acrylic-cases/graded-card-display-cases/) and [trading card display cases](/products/acrylic-cases/card-display-cases/), cut to the holder or card you send. Production starts at 100 pieces per design.

Ordering follows our standard steps:

1. Send the holders the stand must carry, or caliper readings for each, plus slot count, quantity per design and destination.
2. Approve the drawing. A paid sample costs USD 200–500 depending on complexity, takes 3–5 days, is paid separately and is never credited to production.
3. Check the fit of every holder type on the sample.
4. Production takes 15–20 days after sample approval, with 100% inspection against the approved sample.

The published reference for a standard graded-card case is $5.90 per unit at 100+ pieces, FOB Shenzhen. Mixed slots, UV-filtering acrylic, printed backgrounds and magnetic fronts are quoted from your drawing.

[^setscribe]: [SetScribe: Sports card thickness guide](https://setscribe.com/blog/card-thickness-guide/) — defines one point as 0.001 inch and matches card types to 35pt through 180pt holders.
[^ultrapro-toploader]: [Ultra PRO: 3" x 4" Clear Regular Toploaders for Standard Size Cards](https://ultrapro.com/products/3-inch-x-4-inch-clear-regular-toploaders-25ct-for-standard-size-cards) — lists the 3 × 4 inch (76.2 × 101.6 mm) outer size and standard cards up to 35 points.
[^ultrapro-onetouch]: [Ultra PRO: UV ONE-TOUCH Magnetic Holder](https://ultrapro.com/products/uv-one-touch) — lists the ONE-TOUCH thickness options from 23pt to 360pt for standard size cards.
[^wiki-card]: [Wikipedia: Trading card](https://en.wikipedia.org/wiki/Trading_card) — records Topps adopting the 2.5 × 3.5 inch card size in 1957 as the basic US sports card format.