Duramax

What Duramax does

Duramax Building Products, founded in 1983 and headquartered in Montebello, California, is a manufacturer of exterior and interior vinyl building products serving primarily the Western United States. The company operates as a division of US Polymers Inc., itself a subsidiary of UAE-based Harwal Group, an international plastics, aluminum, and steel conversion conglomerate. Duramax manufactures vinyl fencing (privacy, semi-privacy, pool, perimeter, post-and-rail, picket), decks, patio covers, gazebos, vinyl and metal storage sheds, modular insulated buildings, garages, PVC wall and ceiling panels, custom extruded profiles, and pipeline systems. The core technical platform is proprietary DuraResin vinyl formulation — containing over 12 parts per hundred titanium dioxide as UV inhibitor — combined with co-extrusion technology that pairs a UV-resistant cap stock with a rigid substrate, specifically engineered for the high-UV Southwest climate. Products exceed ASTM F964 standards for rigid PVC exterior profiles.

Duramax sells through a hybrid go-to-market model: a dealer and fabricator network across the Western US, three company-operated yard locations in Santee, Ventura, and Commerce (California), and a factory-direct e-commerce channel (duramaxfences.com) that ships DIY fence kits nationwide. Pricing is custom quote-based across all product lines. Customer segments are horizontal: residential homeowners (primary), contractors and dealers, and commercial property operators such as hotels, retail, and apartment complexes. Sub-brands including DuraGrain, DuraDeck, DuraWall, Alumax, StoreAll, WoodBridge, StoreMax, YardMate, and SideMate extend the portfolio across aesthetics, materials, and use cases. Marketing combines content, social media, dealer enablement, SEO targeting Western US metros, and periodic industry events such as the 2016 National Hardware Show.

The company is privately held with no external institutional or venture capital funding disclosed. Revenue, headcount growth, and financial performance are not publicly reported. The operating model is fundamentally a traditional specialty manufacturer: material science differentiation, regional manufacturing scale, and a multi-channel distribution footprint, with no disclosed software, AI, or digital platform components.

Name

Duramax

Legal name

US Polymers Inc

Website

https://duramaxbp.com

Company type

Private

Founded year

1983

Operating status

Operating

Headcount range

101–250 employees

Short description

Duramax Building Products is a California-based manufacturer of vinyl fencing, storage sheds, decks, patio covers, and PVC wall panels, serving residential homeowners, contractors, and commercial property operators across the Western United States through a dealer network, yard locations, and factory-direct e-commerce.

Ownership category

akta.pro rank

Product category

Vinyl Building Products (Fencing, Storage Sheds, Outdoor Structures)

NAICS

Plastics Packaging Film and Sheet (including Laminated) Manufacturing (326112), Sheet Metal Work Manufacturing (332322)

SIC

Unsupported Plastics Film & Sheet (3081), Miscellaneous Plastics Products (3080), Retail-Lumber & Other Building Materials Dealers (5211)

akta.pro primary industry

Privacy Screens, Lattice & Windbreak Installation/Repair (HSAIAJAJ)

akta.pro secondary industries

Wood Decking, Fencing & Outdoor Lumber Products (IMADADAF), Engineered Wood Siding, Trim & Mouldings (IMAMACAI)

Keywords

• Vinyl fencing products
• Storage sheds
• Outdoor building products
• Vinyl manufacturing
• Patio covers decks

Headquarters

HQ city

Montebello

HQ country

United States

HQ region

North America

Offices5 records

Markets served

GTM type

B2B and B2C

Offering type

Hardware or Manufacturing

Cost components

Supply Chain, Operations, Personnel, Marketing or Sales, Infrastructure

Revenue model

1. Vinyl Building Products Sales: One-time sale of vinyl fencing, decks, sheds, patio covers, wall panels, and related building products. Products sold through dealer network and direct-to-consumer DIY kits.
2. Custom Fencing and Fabrication: Custom vinyl fence fabrication services through dealer/contractor network for specialized projects.

Pricing tiers

Go-to-market motion2 records

Distribution channels3 records

Marketing channels6 records

Core offering

Duramax manufactures and sells vinyl and metal exterior building products, with a primary focus on vinyl fencing (privacy, semi-privacy, ranch rail, pool, perimeter, traditional picket), storage sheds (vinyl, metal, insulated modular buildings, garages), decks, patio covers, gazebos, PVC wall/ceiling panels, aluminum fencing (Alumax), custom vinyl profiles, and pipeline/irrigation pipe. Products use a proprietary DuraResin vinyl formulation engineered with high TiO2 content for Southwest UV conditions, and are sold through a dealer/fabricator network, factory-direct e-commerce for DIY kits, and company-operated yard locations in California.

Product overview

DuraMax is a division of US Polymers Inc., a leading California extruder of poly vinyl products. The company offers a comprehensive portfolio of outdoor building products including vinyl fencing (Privacy Fence, DuraGrain Privacy, Semi Privacy Fence, Post & Rail, Traditional Fence, Pool Fence, Perimeter Fence, Alumax, and Ranch Rail), decks (DuraDeck), patio covers, gazebos, storage solutions (Vinyl Sheds, Metal Sheds, Insulated Buildings, Garages, Enclosures, Deck Boxes), furniture (Rolling Tables, Rolling Tool Chests, Rolling Workbenches), PVC Wall and Ceiling Panels, Custom Profiles, and Pipeline Systems. The products are designed to withstand the demanding weather conditions of the Southwest with proprietary DuraResin vinyl formulation containing titanium dioxide and UV inhibitors. The company operates as a building products manufacturer rather than a software technology platform.

Differentiator

Problem solved

Functional benefit

Brands

• DuraGrain: Vinyl fencing with wood grain appearance, combining aesthetics of wood with durability of vinyl
• DuraDeck
• DuraResin
• DuraWall
• Alumax
• DuraMate
• StoreAll
• WoodBridge
• StoreMax
• YardMate
• SideMate

Products and services

• Vinyl Fencing (Privacy, Semi-Privacy, Post & Rail, DuraGrain, Traditional, Pool, Perimeter) A complete line of vinyl fencing products (DuraGrain Privacy, Privacy Fence, Semi Privacy Fence, Post & Rail, DuraGrain Post & Rail, Traditional picket, Pool Fence, and Perimeter Fence) formulated with proprietary DuraResin vinyl to withstand Southwest sun, sold to residential homeowners, contractors, and commercial properties.
• Alumax Aluminum Fencing Aluminum fencing providing the look of wrought iron without the durability and maintenance issues, sold to residential and commercial customers through dealer and direct channels.
• DuraDeck Vinyl Decking Durable rigid vinyl deck with the rich look of wood grain that never needs replacement, sold to homeowners seeking low-maintenance outdoor flooring.
• Vinyl Patio Covers Vinyl patio covers that enhance outdoor living and provide a lifetime of maintenance-free enjoyment, sold to residential homeowners.
• Gazebos Vinyl gazebos that are a stylish and practical addition to yards, offering outdoor shade and aesthetic appeal to homeowners.
• Vinyl Storage Sheds (DuraMate, StoreAll, StoreMax, YardMate, SideMate, WoodBridge) Aesthetically pleasing vinyl storage sheds in multiple configurations (wide double-door StoreAll, compact YardMate, side-entry SideMate, expandable WoodBridge, StoreMax, DuraMate) with all-weather durable construction, designed to blend into residential yards.
• Metal Storage Sheds Metal sheds available in different colors, sizes, and features ideal for both industrial and residential uses.
• Insulated Modular Buildings Energy-efficient flat roof modular insulated buildings for various storage and workspace needs, sold to both commercial and industrial customers.
• Garages and Shelters Garages and shelters offering strength, durability, low maintenance, and abundant storage space for residential and commercial customers.
• Enclosures Turnkey enclosure solutions that are easy to install, attractive, safe, and durable, sold to commercial and residential customers.
• Deck Boxes Weather resistant, durable, and easy-to-assemble deck storage boxes for residential outdoor use.
• Workshop Furniture (Rolling Tables, Rolling Tool Chests, Rolling Workbenches) Rolling tables, rolling tool chests, and rolling workbenches available in a variety of sizes and configurations for garage and workshop use.
• PVC Wall and Ceiling Panels (DuraWall) Affordable PVC wall and ceiling panels that serve as alternatives to Fiber Reinforced Plastic panels, eliminating the need for OSB backing panels and requiring half the labor and material cost for interior finishing applications.
• Custom Vinyl Profiles Precision custom vinyl products manufactured using CAD/CAM design and machining technologies for specialized customer applications.
• Pipeline Systems (Landscape, Irrigation, Specialty Pipes) Wide range of landscape, irrigation, and specialty pipes for agricultural, landscaping, and industrial applications.

Quantifiable outcome

• Tested to withstand 105 mph winds
• +2 more outcomes

Segments3 records

Ideal customer profiles3 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature3 records

Partnerships

One partnership is on record.

• US Polymers InccoreStrategic or Co-development PartnerUS Polymers Inc is the parent company of Duramax Building Products. It is a leading California extruder of poly vinyl products including fencing, sheds, pipes, shutters and decks. Part of Harwal Group of Companies.

Scale indicators4 records

Recent moves5 records

Expansion highlights4 records

Direct peers

• Master Halco: North American distributor and manufacturer of fencing products including vinyl, chain link, and ornamental. Competes with Duramax through the fence contractor and dealer channel with comparable product mix.
• Arrow Storage Products: Manufacturer of metal and resin storage sheds including the Arrow and Spacemaker brands. Directly comparable to Duramax's metal sheds and vinyl storage solutions across retail and e-commerce.
• Barrette Outdoor Living: Manufacturer of vinyl and aluminum fencing, railing, and outdoor products under brands including Freedom, Veranda, and ActiveYards. Direct competitor in vinyl fence across home improvement and pro channels.
• Suncast: Manufacturer of resin outdoor storage sheds, deck boxes, and patio furniture. Direct competitor to Duramax's vinyl/resin storage solutions portfolio across retail and e-commerce channels.
• Weatherables: Direct-to-consumer vinyl fencing and railing manufacturer selling factory-direct with DIY kits. Closely mirrors Duramax's hybrid DTC and dealer model with comparable privacy, semi-privacy, and ranch rail product lines.

Broad incumbents

• CertainTeed (Saint-Gobain): Major building products manufacturer with a leading vinyl fencing and railing portfolio (including Bufftech and SimTek). Directly comparable vinyl fence products, national distribution through lumberyards and big-box retailers, and broader portfolio across roofing, siding, and insulation.
• Lifetime Products: Manufacturer of outdoor storage sheds, tables, and building products using high-density polyethylene. Overlaps with Duramax's shed, garage, deck box, and furniture categories at major retail.
• Trex Company: Leading manufacturer of composite decking and railing. Competes with Duramax's DuraDeck line in the outdoor decking category with strong national brand presence and big-box distribution.
• Keter: Global leader in resin-based outdoor storage, sheds, and furniture. Competes directly with Duramax's vinyl shed portfolio (DuraMate, StoreAll, YardMate) at mass retail and home improvement channels worldwide.
• Ondura (formerly TAMKO Building Products): Building products manufacturer with fencing, railing, and exterior product lines. Adjacent competitor to Duramax in residential exterior building products distributed through lumberyards and contractors.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights7 records

Customer concentration

• Xx.com/duramaxbp
• YouTubeyoutube.com/@duramaxfences
• Facebookfacebook.com/Duramaxbp
• Instagraminstagram.com/duramax_fences
• LinkedInlinkedin.com/company/duramaxpvcpanels

Compliance1 record

Revenue estimate

Valuation estimate

Number of profiles

Profiles1 record

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Duramax