Do I include the tongue or hitch when measuring my RV?

No. Measure body length only, bumper to bumper. The tongue, A-frame, coupler, kingpin, pin box, propane tanks, battery box, spare tire, ladders and bike racks are all excluded. Brochure length usually includes the hitch, so use your own tape measure instead of the spec sheet.

What if my RV measures between two cover sizes?

Always take the larger range. Straps and elasticized hems pull a slightly roomy cover in tight, and the front, rear and underbody straps let you cinch it down. A cover that is even an inch short will not reach and will strain the seams.

How do I measure a Class C RV with a cab-over bunk?

Start at whatever reaches furthest forward, the cab-over bunk or the front bumper, and stop at the rear bumper. The bunk usually overhangs the bumper, so measuring from the bumper alone leaves the cover short at the nose.

Should a pop-up camper be measured open or folded down?

Folded down and latched, the way it will sit when covered. Measure the front wall of the box to the rear wall, excluding the tongue, coupler, propane tank and any front cargo rack.

Help center · Sizing

Measure once. Order the right size.

The one ruleBody only, bumper to bumper.

Every size we sell is based on the length of the body itself. Not the brochure number, not the tongue, not the ladder. Take five minutes with a tape measure and you will never have to guess.

rig types covered

5 min

start to finish

measurement needed

Round up

when in doubt

How to measure

Five steps. One number.

Park level and close everything

Slides in, awnings rolled, ramp doors up, hatches closed. You want the shape it will hold while it is covered.

Find your two end points

Front wall or bumper to rear wall or bumper. Look up your rig below for exactly where each end sits.

Run the tape along the ground

Keep the tape straight and level beside the rig. Do not follow curves or trace up over the nose.

Measure both sides

Do the driver side, then the passenger side. If they differ, use the longer number.

Round up to the size range

Land between two ranges, or within an inch of a break, and you take the larger one. A cover can be cinched in. It cannot be stretched.

Leave it out

None of this counts toward your length.

Manufacturers publish overall length, which usually includes the hitch. We size on body length. If a part of your rig is bolted on outside the walls, ignore it.

Tongue, A-frame or couplerKingpin or pin boxPropane tanks and battery boxesLadders and roof racksSpare tire carriersBike racks and cargo traysHitch-mounted boxesRamp doors left down

By rig type

Ten rigs, ten sets of end points.

Find yours, note where the tape starts and stops, then shop that type directly from the card.

RV18 to 44 ft

Class A RV

Start the tape at

The front bumper, at its furthest forward point.

Stop the tape at

The rear bumper, at its furthest back point.

Do not include

Nothing to exclude on a Class A. The bumper-to-bumper number is the whole coach.

Watch out for

Do not measure to the tip of a bike rack, ladder, spare tire carrier or towed vehicle. Measure the coach body itself.

Class A coaches carry a lot of flat sidewall and a big flat roof. If your measurement lands within an inch of a size break, take the larger size so the cover can reach down the sides.

Shop Class A RV covers Body only, bumper to bumper.

RV18 to 26 ft

Class B RV

Start the tape at

The front bumper of the van.

Stop the tape at

The rear bumper or rear doors, whichever sticks out further.

Do not include

Rear-mounted bike racks, cargo trays, hitch-mounted boxes and swing-out carriers.

Watch out for

Roof racks, solar panels, fans and awnings add height, not length. They do not change which size you order, but note them so you can pad any sharp edges before the cover goes on.

Camper vans are short but tall for their length. Take the bumper-to-bumper number, then check your roof gear is smooth or padded so it does not chafe the fabric.

Shop Class B RV covers Body only, bumper to bumper.

RV18 to 38 ft

Class C RV

Start the tape at

The very front of the cab-over bunk, or the front bumper, whichever reaches further forward.

Stop the tape at

The rear bumper.

Do not include

Ladders, spare tire carriers and anything mounted on the hitch.

Watch out for

The cab-over bunk usually overhangs the front bumper. Measure to whatever reaches furthest forward, or the cover will come up short at the nose.

That overhang bunk is the number one spot water pools on a Class C. Getting the length right is what lets the cover drape over it instead of stopping short.

Shop Class C RV covers Body only, bumper to bumper.

Trailer14 to 42 ft

Travel Trailer

Start the tape at

The front wall of the trailer body, not the coupler.

Stop the tape at

The rear wall or rear bumper of the body.

Do not include

The A-frame, tongue, coupler, propane tanks, battery box and spare tire. None of it counts.

Watch out for

Brochure length is almost always longer than body length, because manufacturers include the tongue. Use your own tape measure, not the spec sheet.

Body-only is the single most common mistake on travel trailers. Skipping the tongue can be three to four feet of difference, which is one or two full size ranges.

Shop Travel Trailer covers Body only, bumper to bumper.

Trailer14 to 42 ft

Travel Trailer Toy Hauler

Start the tape at

The front wall of the trailer body.

Stop the tape at

The rear wall with the ramp door closed and latched.

Do not include

Tongue, coupler, propane tanks and the ramp when it is down.

Watch out for

Measure with the ramp door up. A ramp left down adds length that is not there once you are parked and covered.

Toy haulers are tall at the garage end. Confirm your ramp latches flush before covering so the fabric lies flat against the rear wall.

Shop Travel Trailer Toy Hauler covers Body only, bumper to bumper.

Trailer20 to 45 ft

Fifth Wheel Trailer

Start the tape at

The furthest forward point of the raised front cap, above the gooseneck.

Stop the tape at

The rear wall or rear bumper.

Do not include

The pin box and kingpin that drop below and ahead of the front cap.

Watch out for

Measure the body from the front cap, not the kingpin. The pin box hangs out ahead of the cap and is not part of the covered area.

Fifth wheels have a two-level profile. Length gets you the right size, and the cover is cut to step down over the gooseneck once it is on.

Shop Fifth Wheel Trailer covers Body only, bumper to bumper.

Trailer20 to 45 ft

Fifth Wheel Toy Hauler

Start the tape at

The furthest forward point of the raised front cap.

Stop the tape at

The rear wall with the ramp door closed.

Do not include

Pin box, kingpin and the ramp when down.

Watch out for

This is the largest footprint we cover. Take the measurement twice, once down each side, and use the longer of the two numbers.

On the biggest rigs a second person and a 50 ft tape make this a one-minute job instead of a ten-minute one.

Shop Fifth Wheel Toy Hauler covers Body only, bumper to bumper.

Camper6 to 20 ft

Folding Pop-Up Camper

Start the tape at

The front wall of the box, fully collapsed.

Stop the tape at

The rear wall of the box.

Do not include

Tongue, coupler, propane tank, battery and any front cargo rack.

Watch out for

Measure it folded down and latched, the way it will sit when covered. Set up, a pop-up is far longer than the box you are actually covering.

Folded down, a pop-up is basically one low rectangle. Latch it, measure the box, and that is your size.

Shop Folding Pop-Up Camper covers Body only, bumper to bumper.

Trailer13.7 to 17.7 ft

Teardrop Trailer

Start the tape at

The front of the curved shell.

Stop the tape at

The furthest back point of the rear hatch, closed.

Do not include

Tongue, coupler, tongue box, propane tank and spare tire.

Watch out for

On a curved shell, run the tape along the ground rather than following the curve. You want the flat footprint length, not the arc.

Teardrops are small enough that an inch matters. Measure at ground level on both sides and take the longer number.

Shop Teardrop Trailer covers Body only, bumper to bumper.

Camper8 to 12 ft

Truck Camper

Start the tape at

The furthest forward point of the cab-over nose.

Stop the tape at

The rear wall of the camper.

Do not include

The truck itself. You are measuring the camper unit only, whether it is loaded in the bed or standing on its jacks.

Watch out for

Measure the camper, not the truck bed and not the truck. Cab-over noses reach forward past the camper floor, so start at the nose.

Same number whether the camper is on the truck or up on jacks. Measure the unit once and it fits either way.

Shop Truck Camper covers Body only, bumper to bumper.

Between two sizes?

Always take the larger range.

Straps and elasticized hems pull a slightly roomy cover in tight. A cover that is an inch short will not reach, will pull at the seams and will not sit right through a windy night. And if it still is not right, our Perfect-Fit Guarantee covers the swap.

Perfect-Fit Guarantee

Exactly on a break

A 30 ft trailer with a 28–30 ft and a 30–32 ft range: take 30–32 ft.

Within an inch

Measured 27 ft 11 in against a 28 ft break: take the 28 ft size, not the range below it.

Close to the top of a range

Go up a size. A slightly larger cover is much easier to put on, and the front, rear and underbody straps let you pull it tight. Never hesitate to size up when you are close to the top of a range.

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