Penco Heavy-Duty Pallet Rack

The three-prong beam connection and locking key

Penco’s standard beam ends are made from extra heavy gauge steel with a three-prong connector along an 8-1/2 in. length. The long connector keeps the beam aligned with the post and spreads the load evenly. Tabs run along the face of the beam to protect the prongs in shipping and installation.

The connector slips into slanted slots in the upright to create a compression fit, so the more load on the beam, the tighter the beam-to-upright connection becomes.

Recessed safety locking key

Each beam carries a recessed safety key of heavy gauge steel that slides into a slot on the side of the post. Penco rates it to resist upward force of up to 1,000 lb from forklifts and other handling equipment. It is part of the beam assembly, needs no tools, and stays visible so a quick walk-down can confirm every key is engaged. Penco’s instruction is to slide keys into place as soon as beams are installed; we treat that as an installation checklist item, not an afterthought.

Roll-formed step beams

Penco roll-forms a one-piece beam designed for high strength-to-weight ratios in the load ratings buyers ask for most. Beams come in eight basic styles with different vertical profiles and steel gauges. The overlapping seam and the end connector are MIG welded.

Every beam has a step for accessories, either 7/8 in. or 1-5/8 in. high. The step size decides which decks, supports and cross bars fit, so pick it with the accessories in mind.

The beam face has a recessed M-design that adds strength, protects the locking key and gives a flat area for pressure-sensitive location labels. Each beam is stamped with a letter for its load capacity. Standard beam finish is 710 Sagebrush Yellow for visibility, with safety yellow or any standard Penco color on request.

Because capacity comes from the specific beam style, length and level spacing, we confirm per-level loads from Penco’s tables when we quote. We do not publish blanket capacities for this line.

Penco pallet rack accessories

Coil beds and supportsPenco accessories sit on the beam step to hold product that will not sit on a standard pallet.

Fork clearance and skid channelsFork clearance bars (2 in. wide x 2-3/4 in. high) and 4 x 2 in. skid channels for unpalletized stock and skids.

DeckingWire, steel and wood decking formats. See our wire decking guide for sizing and sprinkler considerations.

• Plywood supports: for 1/2 in. decks on 7/8 in. step beams and 3/4 in. decks on 1-5/8 in. step beams.
• General-duty cross bars: support loads smaller than the unit depth.
• Heavy-duty flanged cross bars: heavier loads smaller than unit depth, on 1-5/8 in. step beams.
• Frame splices: add height to an existing frame or come welded into a new one; top frames ship without footplates.
• Frame protectors and deflectors: anchored guards in front of posts and deflectors on 3 in. increments to reduce forklift damage. More options on our rack guards page.
• Rigid wall brackets and row spacers: tie rack to a wall or space back-to-back rows for NFPA flue space.
• Reel holders: 1,000 lb per pair, for axles up to 2-1/2 in. diameter.

Inspection and long-term care

Pallet rack keeps its rated capacity only while it stays in its designed condition. A simple routine protects people and inventory:

• Daily awareness: operators report any impact right away, even if the damage looks minor.
• Regular walk-downs: check posts for dents, bends or twists, beams for visible deflection or damaged connectors, and confirm every Penco locking key is engaged.
• Anchors and footplates: look for loose or missing anchors, cracked concrete and lifted plates, especially at row ends.
• Reconfigurations: when beams move, recheck level spacing against the load plaques and reseat keys.
• Damaged parts: unload the affected bay and replace damaged components with matching Penco parts. Straightening bent steel in place is not a repair.

For professional inspections and repairs, see our pallet rack repair and inspection service. Protective guards at aisle ends and post protectors cut damage at the source.

Compatibility, expansions and used rack

How does Penco differ from the teardrop-style rack common in big-box catalogs? Teardrop uprights use a teardrop-shaped hole pattern shared by several manufacturers, and their beams typically drop in with a clip. Penco uses its own slanted slot, a long three-prong connector and a recessed sliding key. Neither approach is universally better; what matters is that every part in a bay comes from the same system and is rated for the loads you store. Buyers often choose Penco when they want one manufacturer across lockers, shelving and rack, a wider color range, or compatibility with Penco rack they already own.

When you add to an existing Penco installation, send us photos of the stamped letters on frames and beams, the beam step height and the frame depth. That lets us match new frames and beams to the system on your floor and avoid ordering parts that will not seat correctly.

p>Penco’s slot pattern and three-prong connectors are specific to Penco. Hanging teardrop beams in Penco uprights, or Penco beams in another brand’s frames, changes the connection the rated loads were based on. Expand a Penco system with Penco parts, and check the stamped frame and beam letters so new parts match what is installed. Our pallet rack identification and compatibility guide shows how to tell systems apart.

Used rack: savings on used pallet rack are typically used up by installation, because parts rarely fit well after disassembly and installer time to straighten and fit them costs more than new. Reusing rack you already own can work, but new is sometimes still cheaper after fix-up time. A quick call to sales with pictures helps decide. If the rack is moving with you, see our relocation, teardown and reinstall service.