





Still looking for a dog whelping box that provides all-around care, ensuring safe growth of the puppies? Sinotop Fence’s high-quality, large white vinyl dog whelping box is the perfect choice.
As a professional vinyl fence manufacturer, we bring you this large whelping box, measuring 48 x 48 x 18 inches. It provides ample space for dogs of all sizes, effectively isolating newborn puppies and protecting them from potential dangers.
The adjustable height design balances easy access for the mother with tiered protection for the puppies. Its expandable design is a major highlight, easily connecting to a second unit to create a more spacious area to accommodate dogs of different sizes and numbers. Furthermore, you can add whelping pads, towels, and other postpartum care supplies to further enhance comfort.
This whelping box is made of high-grade white vinyl (PVC) and features a non-slip base and support legs, ensuring stability on any surface. It is not only aesthetically pleasing but also non-toxic, sturdy, and durable, suitable for daily use and dog activity. The enclosed design also greatly simplifies the cleaning and maintenance process, creating an extremely hygienic and healthy growth environment for puppies.



Combining PVC resin with a proprietary blend of additives in a high-shear mixer, ensuring homogeneous dispersion and optimal material properties.
Operators feed the formulated PVC compound into a single- or twin-screw extruder. The extruder plasticizes the compound and forces it through a profile die. Water baths or air cooling achieve cooling, followed by controlled traction to maintain dimensional stability.
Precision cutting equipment automatically cuts extruded profiles to specified lengths, ensuring consistent component dimensions.
Operators employ CNC milling equipment to create precise holes, slots, and other features required for assembly, adhering to strict tolerances.
Subjecting the components to a multi-stage cleaning process, including degreasing and rinsing, to remove surface contaminants and ensure optimal adhesion for any subsequent coatings or treatments.
Trained technicians assemble the fence components using specialized jigs and fixtures, ensuring proper alignment and secure fastening.
Each assembled fence undergoes a comprehensive inspection, including dimensional verification, visual inspection for defects, and functional testing of hardware.
We pack the fence components using appropriate materials and methods to prevent damage during storage and transportation.
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| Picket | Fence Post | Flat Cap | U-Channel for Post |



For small orders, sample orders, or air shipments, T/T in advance (telegraphic transfer-bank order). We can also offer preferential and flexible payment terms to our customers to establish a win-win partnership. Other payments: L/C, D/A, D/P, MoneyGram, Paypal, or Escrow. There can be minor variations in different places.
We offer the following post-purchase services following your payment:
We have the best after-sales staff around. Please Contact Us as soon as possible if you experience any after-sale issues. We’ll get back to you as soon as we can with a satisfying answer.