The Pet Porter is the Toyota Corolla of dog crates: not exciting, everywhere, and probably what your parents used. Petmate (sold under its Aspen Pet brand) has made this plastic clamshell kennel for decades, and it remains the default travel crate for one reason — airlines know it. It meets most airline cargo requirements, which makes it the crate people buy when a flight is on the calendar.

The honest note most roundups skip: the Pet Porter is six different crates sharing one name, and they don’t all behave the same. The small sizes are simple, light, and beloved; the big sizes have documented latch problems — including one owner whose 40″ locking mechanism failed within about 90 days — and a door fit that gets sloppier as the kennel gets bigger. Newer units also run thinner in the plastic than the old ones people remember fondly. This guide reviews all six sizes honestly, with the complaints owners actually report: latch failures, sharp vent edges, doors that need coaxing to close, and the slow decline in plastic quality.

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Pet Porter Sizes at a Glance

# Product Size / Pet Weight Best For
1 Pet Porter 19″ 19″ x 12.6″ x 10″ · up to 10 lbs Best for cats & tiny dogs Check Price
2 Pet Porter 24″ 24″ x 16.5″ x 14.5″ · up to 20 lbs Best small-dog travel Check Price
3 Pet Porter 28″ 28″ x 20.5″ x 21.5″ · up to 30 lbs Best airline travel pick Check Price
4 Pet Porter 32″ 32″ x 22.5″ x 24″ · up to 50 lbs Best for medium-large dogs Check Price
5 Pet Porter 36″ 36″ x 25″ x 27″ · up to 70 lbs Best for large breeds Check Price
6 Pet Porter 40″ 40″ x 27″ x 30″ · up to 90 lbs Best extra-large Check Price

Prices shift constantly — check before you buy. Sizes are manufacturer figures. The 19″, 24″, and 36″ links open the shared listing — select your size variant on the page.

1. Pet Porter 19″ — Best for Cats & Tiny Dogs

1. Pet Porter 19" — Best for Cats & Tiny Dogs

The 19″ Pet Porter (up to 10 lbs, 19″ x 12.6″ x 10″, about 3 lbs) is the classic cat carrier — and the least complained-about size in the line. It’s light enough to carry one-handed, assembles with metal nuts and bolts in minutes, and the heavy-duty plastic shell is genuinely easy to wipe down. The line’s ratings are strongest at this end, sitting around 4.3 stars across thousands of reviews.

The honest part: even here, the line’s signature quirks show up. The side latches don’t just snap — owners report you have to give them a real whack to seat them fully, and if a latch sits flush with the carrier edge it’s not actually engaged (a suspected cause of many returns). One reviewer also warns the interior edges of the vent holes are sharp — enough that an anxious pet nosing at them could cut itself — and recommends sanding them before use. Five minutes with sandpaper fixes it, but you shouldn’t have to.

Specs: 19″ x 12.6″ x 10″ · pets up to 10 lbs · ~3 lbs · heavy-duty plastic shell, metal screws · ventilation openings · carrying handle.

Pros: featherweight; simple and sturdy; easiest size to assemble; strongest reviews in the line.

Cons: latches need a hard whack to fully engage; sharp vent-hole edges — sand them; no airline tie-down features at this size.

Verdict: The safe small-pet default — just sand the vents and whack the latches. Check the price on Amazon.

2. Pet Porter 24″ — Best Small-Dog Travel

2. Pet Porter 24" — Best Small-Dog Travel

The 24″ (up to 20 lbs, 24″ x 16.5″ x 14.5″, about 5 lbs) is the small-dog sweet spot — big enough for a Jack Russell or Miniature Schnauzer, still light enough to haul through an airport or to the vet. This is the size reviewers buy for 25-lb Maine Coons and similar. It carries the line’s best per-size rating, around 4.4 stars.

The complaints are the line’s familiar ones, sharpened slightly: owners note the plastic is a touch thinner than the older carriers this replaced — still adequate, but the generational decline is real and visible side by side. The latch-whacking and sharp-vent issues from the 19″ apply here too. And note the weight ceiling honestly: a 24″ crate is snug for a 20-lb dog on a long trip; if your dog is near the limit, the 28″ is the more humane choice. “Up to 20 lbs” is a containment rating, not a comfort rating.

Specs: 24″ x 16.5″ x 14.5″ · pets up to 20 lbs · ~5 lbs · plastic shell, metal hardware · ventilation openings · carrying handle · ~4.4 stars.

Pros: best-rated size in the line; light and portable; ideal for vet and car trips.

Cons: thinner plastic than the vintage units; latch and vent quirks apply; snug at the top of its weight range.

Verdict: The small-dog travel pick — size up to the 28″ if your dog is near 20 lbs. Check the price on Amazon.

3. Pet Porter 28″ — Best Airline Travel Pick

3. Pet Porter 28" — Best Airline Travel Pick

The 28″ (up to 30 lbs; 28″ x 20.5″ x 21.5″, interior 24.25″ x 18.25″ x 19.5″, about 10 lbs) is the most important size in the line — and the only one that includes a carrying handle, per Petmate. It meets most airline cargo specifications: three-sided ventilation, tie-down-compatible construction, and an easy-open latch you can work one-handed at the ticket counter. This is the crate people mean when they say “I need a Pet Porter for the flight.”

The honest part: this is where the size-related compromises start. Owners praise the one-hand latch but note the door needs deliberate alignment to close cleanly — the fit isn’t precision. The interior runs dark, which several owners mention (one noted it’s genuinely hard to see a black dog inside). And the plastic-thinning complaint is more noticeable at this size than below it. None of this disqualifies it — it’s still the right crate for the job — but inspect the latch and door fit before travel day, not on it.

Specs: 28″ x 20.5″ x 21.5″ (interior 24.25″ x 18.25″ x 19.5″) · pets 25–30 lbs · ~10 lbs · meets most airline cargo specs · carrying handle (only size with one) · one-hand latch · ~4.1 stars.

Pros: the airline-travel standard; carrying handle included; one-hand latch; wipe-clean plastic.

Cons: door fit needs deliberate alignment; dark interior; plastic thinner than older generations.

Verdict: If you’re flying with a medium dog, this is the one — check the latch before travel day. Check the price on Amazon.

4. Pet Porter 32″ — Best for Medium-Large Dogs

4. Pet Porter 32" — Best for Medium-Large Dogs

The 32″ (up to 50 lbs; 32″ x 22.5″ x 24″, about 14 lbs) covers the big middle — Border Collies, Bulldogs, Standard Schnauzers. Same formula: heavy-duty plastic clamshell, wire door, metal screws, ventilation openings, and airline-cargo compatibility for dogs in the 30–50 lb range. It ranks around 4.1 stars with thousands of reviews.

Here’s where the honest review gets sharper. An owner of a large Pet Porter documented the door problem precisely: the door is not a precision fit — it pivots in a molded plastic well, the frame isn’t rigid enough to hold it square, and all four wire pins of the latch must be aligned with their holes before it will close. On a 32″, that’s manageable; it’s a warning of what’s coming at 36″ and 40″. Owners also note there’s no carry handle at this size (handle is 28″-only), so you’re carrying 14 lbs of crate plus a 40-lb dog with two hands and a prayer. Verify the latch engages fully before every trip.

Specs: 32″ x 22.5″ x 24″ · pets 30–50 lbs · ~14 lbs · wire door, metal hardware · meets most airline cargo specs · no carry handle · ~4.1 stars.

Pros: right size for the popular 30–50 lb range; sturdy enough for car travel; airline-compatible.

Cons: door fit gets sloppy — align all latch pins deliberately; no handle at this size; check latch engagement every time.

Verdict: The right crate for medium-large dogs — just budget an extra minute for the door. Check the price on Amazon.

5. Pet Porter 36″ — Best for Large Breeds

5. Pet Porter 36" — Best for Large Breeds

The 36″ (up to 70 lbs; 36″ x 25″ x 27″, about 18.8 lbs) is the large-breed workhorse — Labs, Goldens, German Shepherds. At this size the Pet Porter is a serious piece of plastic, and owners generally find it durable enough for car travel and home use. Tie-down holes for securing it in a vehicle appear on the larger sizes, which matters when you’re hauling 70 lbs of dog.

The honest part: every complaint in the line is loudest here and at the 40″. The door-fit problem from the 32″ gets worse as the opening gets bigger. The plastic feels thinner relative to the size than the small crates. And the weight starts to matter — nearly 19 lbs of crate before the dog gets in, with no handle. This is also the size where “meets most airline cargo specs” meets reality: always verify with your specific airline, because large-breed cargo rules vary and some carriers have moved to stricter crate requirements. Around 4.1 stars — solid, but the 1-star reviews are angrier than at smaller sizes.

Specs: 36″ x 25″ x 27″ · pets 50–70 lbs · ~18.8 lbs · wire door, metal screws · tie-down holes on larger sizes · no carry handle · ~4.1 stars.

Pros: fits the big popular breeds; tie-down holes for vehicle travel; durable enough for regular use.

Cons: door-fit slop is worst at large sizes; heavy with no handle; 1-star complaints are sharper here.

Verdict: The large-breed default — strong, but verify airline rules and the latch before you fly. Check the price on Amazon.

6. Pet Porter 40″ — Best Extra-Large

6. Pet Porter 40" — Best Extra-Large

The 40″ (up to 90 lbs; 40″ x 27″ x 30″, about 23.8 lbs) is the biggest Pet Porter — for giant breeds and the largest Labs. Same clamshell design, scaled to the edge of what the plastic can support. It holds around 4.1 stars with thousands of reviews, and owners who get a good unit are generally satisfied.

Now the serious complaint, documented in a 2025 Amazon review: an owner found the front of the 40″ locking mechanism missing — spring and metal washer on the floor — within about 90 days of purchase. The weakened latch meant the dog could have pushed the door and gotten its head stuck between door and frame. The owner reported repeated unanswered calls to PetMate customer service and no help from Amazon outside the return window. One review isn’t a recall, but a latch failure on a giant-breed crate is a safety issue, not a cosmetic one — and it’s the most severe documented complaint in the line. If you buy the 40″, inspect the locking mechanism on arrival and monthly thereafter, and consider that at this size and price, sturdier alternatives (like Petmate’s own Ultra Vari line) exist.

Specs: 40″ x 27″ x 30″ · pets 70–90 lbs · ~23.8 lbs · four-point rotating door latch · tie-down holes · no carry handle · ~4.1 stars.

Pros: the only Pet Porter big enough for giant breeds; roomy; airline-cargo compatible.

Cons: documented latch-mechanism failure within ~90 days (2025 review); poor responsiveness from PetMate customer service reported; door-fit slop at its worst; very heavy with no handle.

Verdict: Buy it only if you need the 40″ size — and inspect the latch mechanism on arrival and regularly after. Check the price on Amazon.

How to Choose the Right Pet Porter Size

Measure the dog, not the weight label. The reliable method, straight from Petmate: measure from the top of the head to the floor, and from nose tip to tail base. The crate should be 3–4 inches taller and longer than the dog — enough to stand, turn, and lie flat. Weight ranges (“up to 30 lbs”) are containment ratings; a long, tall 28-lb dog may need the 32″.

For flights, the 28″ is the sweet spot. It’s the only size with a carrying handle, it’s the most widely airline-accepted, and it’s the size with the deepest review history for air travel. Larger sizes work for cargo but always verify with your specific airline — cargo crate rules vary by carrier and have tightened in recent years.

Test the latch before you need it. The line’s signature quirk: side latches must be whacked firmly until fully seated (flush = not engaged), and the door’s wire pins must align with their holes on larger sizes. Do this at home, calmly, before the airport or vet parking lot.

Sand the vent edges on small sizes. Multiple owners report sharp interior vent-hole edges that could cut an anxious pet’s nose. Five minutes with sandpaper or a nail file on the small crates is cheap insurance.

Expect thinner plastic than the old ones. If you’re replacing a 20-year-old Pet Porter, the new one will feel lighter and flexier. It’s still adequate for calm dogs and normal travel, but it’s not the tank you remember — and it’s one reason the 40″ deserves extra latch scrutiny.

Know the warranty and the service reality. Petmate offers a one-year limited warranty, but at least one owner documented weeks of unanswered calls to customer service over a latch failure. Buy from a retailer with a solid return window, inspect on arrival, and keep your receipt.

Bottom line: the Pet Porter 28″ is the pick for most people — the airline-travel standard with the only carrying handle in the line. The 19″ and 24″ are excellent small-pet crates with the line’s best ratings. The 32″ and 36″ serve bigger dogs well if you respect the door-fit quirks. And the 40″ works for giant breeds — but that documented latch failure means you inspect it like your dog’s safety depends on it, because it does.

Frequently Asked Questions

Are Pet Porter crates airline approved?

They meet most airline cargo specifications — ventilation, secure latching, tie-down compatibility — but “most” isn’t “all.” Always verify with your specific airline before flying, especially for large sizes. Cargo rules vary by carrier and have gotten stricter. The 28″ is the most widely accepted size.

What size Pet Porter do I need for my dog?

Measure your dog: height from floor to top of head, and length from nose to tail base. Add 3–4 inches to each — that’s your minimum crate size. Then cross-check the weight rating. When between sizes, size up; a cramped crate stresses the dog, and an oversized one is only a mild house-training concern.

Why won’t my Pet Porter’s latches snap shut?

This is the line’s most reported quirk: the side latches need a firm, deliberate whack to seat fully — they don’t just click. If a latch sits flush with the carrier edge, it’s not engaged. Line everything up, press hard, and visually confirm each latch is fully locked before putting the pet in.

Is the Pet Porter good quality? I’ve heard the plastic got thinner.

Owners consistently report that newer units use thinner plastic than the older ones — still adequate for calm dogs and normal travel, but not the tank people remember. The small sizes get the fewest complaints; scrutiny should increase with size, peaking at the 40″ with its documented latch failure.

How do you clean a Pet Porter?

The plastic shell wipes down easily with mild soap and water — that’s one of its genuine strengths over fabric crates. The two halves separate (metal nuts and bolts) for deep cleaning. Remove bedding and wash it separately, and let the crate air-dry fully before reassembling to avoid trapped moisture and odor.

Pet Porter vs. Petmate Vari Kennel — what’s the difference?

The Pet Porter is the classic line (often sold under the Aspen Pet brand); the Vari Kennel is Petmate’s step-up line with four-sided ventilation, a stay-dry moat, and generally sturdier construction at a higher price. For the 40″ size especially — given the Porter’s documented latch issues — the Vari or Ultra Vari is worth the upgrade.

Variant note: the 19″, 24″, and 36″ links open Petmate’s shared listing — select your size variant on the page before buying.

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