Skip to product information
Malibu MapleBox™ P1GADJ-H Non-Metallic One-Gang Adjustable Horizontal Wall Box - New Work, 21 Cubic

Malibu hasn’t tried to overpromise. They do what they say they’ll do and that’s why we’ve continued working with them.

Alexander V.

Ship times have been accurate, which helps us plan. We’re not chasing updates or explaining delays to customers, and that alone adds value.

Sophia Nguyen

We started with a few Malibu SKUs and gradually expanded. Stock has been reliable, orders ship when they say they will and communication has been straightforward. That consistency has made it easier for us to keep Malibu on the shelf.

Marcus Kane

Having product available locally has helped us cover urgent contractor needs without scrambling. Will call pickup and local delivery have both been dependable, which matters when timelines are tight.

Elena Rose

When we have questions, we get answers quickly from someone who understands the product and the distribution side. That’s been a positive experience for us.

David Smith

Malibu MapleBox™ P1GADJ-H Non-Metallic One-Gang Adjustable Horizontal Wall Box - New Work, 21 Cubic

SKU: P1GADJ-H
UPC: 850047603975
Sale price $221.00

When it comes to finding a reliable and safe option for electrical installations, look no further than the Malibu’s 1 gang Horizontal adjustable box. With a capacity of 21 cu. in. and constructed of durable PVC material, this box is designed to work with non-metallic sheathed cable in accordance with Article 314 of the NEC. Its non-conductive PVC construction ensures durability, making it an ideal choice for both residential and commercial settings. Plus, it has been ETL Listed to help ensure safety, giving you peace of mind and confidence in the product's reliability.

DOWNLOADSpecification Sheet 

  • Four knockouts to hold wires securely in place.
  • Adjustable steel stud bracket to fit most drywall and finishes 
  • Designed to work with non-metallic cable. 
  • Crafted with durable PVC material and designed for easy, cost-saving installation to ensure long-lasting performance.
  • Quick and easy to mount onto a standard wood or metal stud
  • ETL Listed and rated for 2-hour fire protection
  • Size: 2.3” Length × 3.7” Width × 3.3”Depth
    Package: 100 Master Carton
    5800 in stock

    Pickup available at Malibu

    Usually ready in 24 hours

    Available locations

    Malibu MapleBox™ P1GADJ-H Non-Metallic One-Gang Adjustable Horizontal Wall Box - New Work, 21 Cubic

    Malibu MapleBox™ P1GADJ-H Non-Metallic One-Gang Adjustable Horizontal Wall Box - New Work, 21 Cubic

    Package: 100 Master Carton

    • Malibu

      Pickup available, usually ready in 24 hours

      5525 McKinley Avenue, Los Angeles CA 90011, United States

      Get direction
    Fast fullfilment
    1-year hassle-free returns
    5-year warranty

    Frequently asked questions

    Still looking for an answer?

    Becoming a Malibu distributor is simple. Contact our sales team with your company information, and we'll review your application. Once approved, you'll receive distributor pricing, dedicated support, and access to exclusive promotions.

    Prepaid freight is based on your shipping destination and order total.

    • Pacific Region – $2,000+
    • Mountain Region – $4,000+
    • Central Region – $5,000+
    • Eastern Region – $6,000+
    • Alaska – $6,000+

    Most in-stock orders ship the same business day or within one business day. Standard ground transit is typically 1–6 business days depending on destination.

    Malibu products ship from our Los Angeles, California distribution center.

    Yes. We maintain inventory on our core product lines. If an item is temporarily unavailable, our team can provide an estimated restock date or place it on backorder.

    Yes. We can ship directly to your customer, job site, or branch location.

    Many products are available in broken case quantities, while some items are sold in full-case quantities. Contact us for product-specific packaging information.

    Yes. Malibu products are UL Listed or ETL Listed where applicable. Certification details are included on each product's specification sheet.

    Yes. Product specification sheets, dimensions, certifications, and installation instructions are available for most Malibu products.

    Yes. Malibu products are backed by a manufacturer's 5 year warranty against defects in materials and workmanship.

    Yes. rebates and special programs are available throughout the year. Contact your sales representative for current offers.

    We review competitive quotes on comparable products and work to provide the best possible value whenever possible.

    Unused, uninstalled products in their original packaging may be returned within 1 year. Please contact Customer Service for an RMA before returning merchandise.

    Our knowledgeable sales and technical support team is available Monday through Friday to assist with product selection, installation questions, code compliance, and project recommendations.

    Yes. We offer competitive volume pricing and special project pricing for qualifying projects. Contact our sales team for a quote.

    Malibu sells exclusively to electrical supply distributors throughout the US. We do not sell directly to contractors, electricians, or the general public.

    If you're looking to purchase Malibu products, contact us and we'll be happy to help you find an authorized distributor that stocks Malibu products in your area.

    Built for distributor profit

    Competitive pricing, volume discounts and tiered incentive programs.

    Easy to do business with

    Fast quotes, knowledgeable support and dedicated account managers.

    Low-risk inventory

    UL & ETL-listed products backed by a 5-year warranty and hassle-free 1-year returns.

    Reliable supply

    Fast nationwide shipping, free local delivery, and same-day pickup.