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Pallet Rack Types and Helpful Tips


Pallet racking is any material handling storage system that stores materials on pallets in horizontal rows on multiple levels. Pallet racks require the use of a forklift truck to load and unload pallets onto the racks. All pallet racking, no matter the style, will increase the storage density of your warehouse, retail centers, and any other storage facility.There are many factors to consider when choosing which style of racking is right for you:


  • Storage density required/desired
  • Building space, both floor space and height
  • Placement of obstructions (doors, support beams, columns, etc.)
  • Inventory size and weight
  • Inventory accessibility
  • Cost


selective rackSelective pallet rack is the least dense and also the least expensive, and allows for direct access to each product at each shelf height. They come in two main styles, roll formed and structural. Roll formed racking is typically lighter and has horizontal load beams that are held in to place by clips, and are typically adjustable in 2 inch increments. This makes adjusting the rack heights very easy, but roll formed pallet racks cannot hold as much weight as other styles, and tend to be less resistant to impact by forklifts.
Structural selective racking is much more durable because the horizontal beams are attached to the upright beams with bolts. Both types of selective racks are adjustable and customizable, but roll formed is less durable and more prone to damage. Structural pallet rack can also be a part of the building’s structure, replacing the building’s I-beams, creating a rack supported building.


Other types of pallet rack include drive-in/drive-through, push-back, and pallet flow rack. These types allow for more dense storage, but you cannot access any given inventory item at any moment. It takes a little more planning and organization to properly utilize this style of racking, but when done properly is extremely efficient.


Drive in/through racks allow for lift equipment to drive directly into the rack’s rows. Drive through is open at each entry point allowing for a forklift to drive completely through the rack, whereas drive in is only open at one end. Drive in requires a LIFO style of inventory (last in, first out), meaning that the first pallet to be stored in a row is the last one out, and the last one to be stored is the first one out. Drive through used either the LIFO or FIFO method for storing, because pallets can be accessed from either side. Drive-in/drive-through rack is an extremely dense method of storage, because it does not require aisles between each rack system. This style can be damaged somewhat easily because forklifts travel through the rows with very little clearance on either side.


pushback_rack2_0001Push-back pallet rack takes advantage of depth for additional storage capacity because it can typically store between four and six pallets deep, and pallets are stored on wheeled carts that sit on top of rails. These rails are angled slightly toward the front of the racking, causing pallets to roll forward due to gravity. When a forklift loads a new pallet into a row with pallets already in it, it pushes the existing pallets back. When a forklift takes a pallet out, all of the other pallets slide forward towards the front. This a great labor saver but is also more expensive than selective and structural rack, so it depends on how dense you need your storage space to be.
pallet_flow5_0001Pallet flow rack is very similar to push back rack in that it takes advantage of depth and gravity for additional storage density. Pallet are placed on roller wheels at a slight incline so that pallets move to the front of the rack automatically. These systems may contain braking systems that control the speed of the moving pallets for added safety. Depending on your setup, pallet flow rack can be loaded in the back and picked in the front (FIFO), or loaded and picked in the front (LIFO).
No matter what you are shopping for, the amount of options can end up being overwhelming, making it harder to make a decision. This is especially true when deciding what type of used pallet racking is right for your material handling application. ASI carries a variety of styles and brands, some of which aren’t manufactured anymore. These styles are just as safe and function properly, but they have just been replaced with newer models.

Types of Gravity Conveyor


Used Gravity Conveyor, as the name implies, is a powerless free flowing conveyor system for transporting products throughout the warehouse. They can be set up at a decline to have products flow automatically from an area of high elevation to low elevation. They can also be set up horizontally for products to be manually pushed, which is ideal for areas where products need to be manipulated manually. Typically gravity conveyor is used with power conveyor and other conveyor accessories to make a complete conveyor system.


skatewheelGravity conveyor comes in two styles, skatewheel and roller. Used skatewheel conveyor is very lightweight and is used for medium to lightweight applications. It contains many individually turning skate wheels per row to transport product. This style of gravity conveyor requires very little pitch to transport products automatically, but can only be used with products that have a flat bottom, like boxes, bins, trays, and totes. Skatewheel conveyor curves (45 and 90 degrees) can also be added to move products around corners or other obstacles within the warehouse.
roller gravityGravity roller conveyor is a little more heavy duty, and can also move loads either horizontally or at a decline. Roller conveyors allow for the transportation of products without a flat bottom, like pallets, and curves can also be added to the system (45 or 90 degrees).
flexible for articleIn addition to curved sections of gravity roller and gravity skatewheel conveyors, there is also flexible conveyor that comes in both roller and skatewheel. Flexible conveyor is also gravity powered, flexible around corners and other obstacles, and can expand and contract to custom lengths. This is ideal for setting up temporary conveyor lines near shipping and receiving areas to quickly and efficiently load and unload the trucks.
Why buy used? You might ask yourself this question, and the only straightforward answer is that it saves you money in the short run. Most people these days are skeptical when they see a big price saving when buying used. You might ask, am I really getting the same quality? Will it really work just as well? The answer is always yes when buying from ASI. All used conveyors are cleaned, inspected, and tested. Any worn rollers or wheels are replaced, and used conveyor is back by a 30 day ASI guarantee. If any parts are found defective, ASI will replace it with another pre-owned part at no cost to the purchaser. For more details, please see our Conveyor Guarantee page. Call us today for a same day quote!

Used Mezzanine Benefits


Used mezzanines are a perfect way to add extra storage or office space to your warehouse or storage facility. Typically mezzanines are semi-permanent floor systems that are usually installed within buildings between existing permanent stories.
ASI custom designs used mezzanine systems using CAD drawings to suit your specific needs. Some of the benefits of a custom designed used mezzanine from ASI include:


Cost Effective – Mezzanines are one of the most cost effective ways to maximize storage space or add additional office spaces to your warehouse or storage facility. This is much less expensive than building a structure from scratch or relocating to a new facility with the extra space. Relocating would require payment of rent or purchase of additional space, and additional property tax. Not only are you able to stay in your existing space, but you are able to cost effectively maximize the space you currently have.


Reconfigurable – Our used mezzanines are reconfigured using CAD drawings, so it can be built to your exact specifications based on your available space and needs. We will fit the used mezzanine to your existing available warehouse or storage space, and can work with you to pick the best options to maximize that space.


Additional Options – Used mezzanines have many styles of flooring to choose from based off of your weight requirements including plywood, open plank, bar grating, B deck, and diamond plated. You also have the option of adding mezzanine stairs or a mezzanine ladder for safe and easy access to the mezzanine floor. Used mezzanine catwalks, gates, and hand railings can also be included in your mezzanine for additional safety of your workers.


Movable – Mezzanines are considered semi-permanent because they act as a permanent structure because of their strength, but can also be broken down and relocated when needed. This is ideal for the constantly changing warehouse environment because the mezzanine can be moved within the building or even taken off site to another facility.


Expandable – Mezzanines can be added to and expanded without taking the existing structure down. As your business expands, so can your mezzanine for additional storage, offices, and more.


Climate Control – Mezzanines are almost always installed in your existing facility, so it takes advantage of your existing heating and cooling systems.


On Site Installation – On site installation of used mezzanines from our technicians is fast, efficient, and reliable. Installation can be completed in as little as one day depending on the size and complexity of the mezzanine. This allows for operations at your facility to continue to run smoothly with little interruption from construction.


Why Buy Used? This might be the first thing you ask yourself, and the only obvious answer is that it saves you money, but this may lead to other more concerning questions. Is a used mezzanine just as safe as new one? The answer is yes. You will never compromise the safety of your workers and equipment when buying used from ASI because that is our top priority. We personally and currently use mezzanines that we acquired used to structure our own facility, including our new office space. Every used mezzanine is in good working condition, so yes, you will save money, and no, you will not compromise the safety of your workers or equipment. Call today for a free quote and CAD drawing of a used mezzanine.