3/8" x 300' 5,000 PSI A-Frame Hose Reel DHRA50300

A 150-foot hose reel gets you to the front of most houses. It does not get you around a three-story commercial building, across a parking lot to the far row of a strip mall, or up to the third floor of a townhome without dragging extra hose across the ground. The DHRA50300 A-frame hose reel holds 300 feet of 3/8" high-pressure hose, which means you park once and reach the entire job site without moving your trailer.

This is the reel that commercial pressure washing contractors put on their rigs when they are done outgrowing smaller reels. It is rated for 5,000 PSI, built on a welded steel A-frame that bolts directly to a trailer or skid, and has the kind of construction that handles daily use without the bearings wearing out or the drum wobbling after a few months.

Why 300 Feet Changes How You Work

Most residential jobs can be done with 150 feet of hose. But the moment you take on commercial work, apartment complexes, HOA communities, or large residential properties, 150 feet becomes a constant limitation. You end up moving the trailer mid-job, running extension hoses that create drag and pressure drop, or turning down work because the logistics of reaching the far side of a building are not worth the hassle.

With 300 feet on the reel, you set up once and work the entire property. On a commercial building, you can wash all four sides without repositioning. On residential work, you can reach every house on a cul-de-sac from one parking spot. The time savings add up fast. Moving a trailer and re-staging hose costs 15 to 20 minutes every time you do it. Eliminate two or three repositions per day, and you are getting an extra hour of billable work done.

Product Specifications

• Model: DHRA50300
• Hose Capacity: 300 feet of 3/8" high-pressure hose
• Maximum Working Pressure: 5,000 PSI
• Maximum Flow Rate: Up to 12 GPM
• Frame Construction: One-piece welded steel A-frame with powder coat finish
• Swivel: Stainless steel swivel with 1/2" FNPT inlet and outlet
• Drum Brake: Included, prevents unwanted unspooling during transport
• Locking Pin: Drum locking pin keeps the reel secure when not in use
• Reel Weight: Approximately 32 lbs (without hose)
• Temperature Rating: Suitable for cold and hot water applications
• Mounting: Bolts to trailer deck, skid frame, or truck bed using A-frame base

A-Frame Design: Why It Matters for Trailer Mounting

The A-frame design is not just about looks. The triangular frame distributes the weight of a fully loaded reel (300 feet of 3/8" hose weighs roughly 60 to 70 pounds, plus the reel itself) across a wide base that keeps the unit stable during transport and operation. The flat sidewalls keep the profile compact, which matters when you are fitting multiple reels, a surface cleaner, chemical tanks, and a buffer tank onto a single trailer.

The frame sits low to the deck, keeping the center of gravity down. This matters when you are driving between job sites with a loaded trailer. A top-heavy reel mount is a safety concern on the highway, especially in crosswinds or when braking hard.

Mounting is straightforward. The A-frame base has pre-drilled holes for bolting directly to your trailer deck or skid frame. Use grade 5 or better bolts and lock washers. Some contractors weld the frame directly to a steel trailer, which is fine but makes it harder to remove for maintenance or reel replacement later.

Stainless Steel Swivel: The Detail That Saves You Money

The swivel on a hose reel is the rotating joint that connects the stationary inlet pipe to the spinning drum. Every time you pull hose off the reel or wind it back on, the swivel rotates. On a busy day, that swivel might turn a hundred times or more.

Cheap swivels are the number one failure point on pressure washer hose reels. When a swivel leaks, your system loses pressure, wastes water, and makes a mess on the trailer deck. The DHRA50300 comes with a stainless steel swivel with 1/2" FNPT inlet and outlet. Stainless resists the corrosion that kills brass or plated swivels, especially if you are running any chemicals through the high-pressure side of your system.

The 1/2" inlet and outlet size is important. Even though this reel holds 3/8" hose, the swivel is 1/2" to minimize flow restriction at the connection point. This reduces the pressure drop through the reel assembly and delivers more of your pump's output to the nozzle.

How to Load and Maintain Your Hose Reel

Loading hose: Feed the hose fitting through the drum guide and connect it to the swivel outlet inside the drum. Wind the hose onto the reel under light tension, guiding it back and forth across the drum to distribute the wraps evenly. Uneven loading causes the hose to pile up on one side, which leads to tangling and makes the reel harder to pull.

Daily use: Pull hose off the reel at a steady pace, letting the drum brake provide just enough resistance to prevent overrun. When reeling back in, crank smoothly and guide the hose with your free hand. Do not let the hose wind onto itself in a loose pile.

Maintenance: Grease the swivel bearing every 30 to 60 days of regular use. Check the drum brake adjustment monthly. A brake that is too loose lets the drum spin freely and dump hose on the ground. A brake that is too tight makes pulling hose exhausting. Inspect the swivel for leaks weekly. A few drops of water at the swivel joint usually means the internal seal needs replacement.

Winter storage: Drain all water from the reel, swivel, and hose before freezing temperatures arrive. Trapped water that freezes will crack the swivel housing or burst hose fittings. Run pump protectant through the system if your machine will sit unused for extended periods.

Stackable with Stack Rack Accessory

Need two hose reels on a rig that only has floor space for one? The stack rack accessory lets you mount a second A-frame reel directly above the first, doubling your hose capacity without using additional trailer deck space. This is common on rigs that run both a high-pressure hose and a soft wash hose, or rigs that carry a backup reel loaded with hose for large commercial jobs.

• Stack Rack Stacking Kit – Fits 150, 300, and 450 foot A-frame reels. Bolts to your existing reel frame for a secure double-stack setup.

Related Products

• Roofster Reel – 300' Stainless Steel Plumbing – Custom SBS reel with all stainless internal plumbing for soft wash and chemical rigs.
• Browse All Hose Reels – A-frame reels, electric rewind reels, chemical hose reels, and accessories.
• High-Pressure Hoses – 3/8" and 1/2" hose in various lengths to load onto your reel.

Frequently Asked Questions

Can I put 1/2" hose on this reel?

This reel is rated for 300 feet of 3/8" hose. You can fit 1/2" hose on it, but the capacity will be significantly less, roughly 150 to 175 feet depending on the hose outer diameter. If you need 300 feet of 1/2" hose, you would need a larger capacity reel.

Does this reel come with hose?

No. The DHRA50300 is the reel only. Hose is sold separately so you can choose the brand, length, and rating that matches your machine. This also makes it easy to swap out a worn hose without replacing the entire reel assembly.

How do I know if 300 feet is enough for my work?

Measure the distance from where you typically park your trailer to the farthest point you need to reach on your largest regular jobs. Add 20 to 30 feet of slack for going around corners and up stairs. If that number is over 150 feet, a 300-foot reel is the right move. If you regularly need more than 300 feet, look at the 450-foot capacity models.

Will this fit on a 5x8 trailer?

Yes. The A-frame footprint is compact enough to fit on small trailers. The flat sidewall design keeps the profile narrow so you can mount it alongside your machine and still have room for chemical tanks and accessories.

What pressure washer size is this reel rated for?

The 5,000 PSI and 12 GPM rating covers the full range of commercial pressure washers. Whether you are running a 4 GPM at 4,000 PSI belt-drive machine or a larger 8 GPM unit, this reel can handle it.

Is the powder coat durable?

Powder coat is significantly more durable than spray paint. It resists chipping, scratching, and UV fading better than liquid paint finishes. That said, any coating will eventually wear at high-contact points like the hose guide area. Touch up chips with rust-inhibiting paint to prevent corrosion on the underlying steel.

In stock and ships same day from Sun Brite Supply in Gaithersburg, Maryland. We stock hose reels, fittings, and accessories for professional pressure washing rigs. Need help choosing the right reel for your setup? Give us a call.