Dongyang, China & Houston, TX·250+ Product Models·UL · CE · ISO 9001
Hstube — Dongyang Hstube Co., Ltd

Product Range

228+ products across 16 categories. Flexible ducts, insulated ducts, industrial hoses, and installation accessories — manufactured with 28 years of expertise.

Flexible Ducts7 Products

Flexible Ducts

Non-insulated flexible ducts for residential and commercial HVAC systems. Available in aluminum, polyester, and PVC configurations from 3" to 24" diameter.

  • UL 181 Class 1 compliant
  • 3" to 24" diameter range
  • Corrosion-resistant materials
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Insulated Ducts4 Products

Insulated Ducts

Insulated flexible ducts with fiberglass wool, polyester wool, or acoustic lining. R4.2 to R8 insulation values for energy-efficient HVAC systems.

  • R4.2 / R6 / R8 insulation values
  • Fiberglass & polyester wool options
  • Vapor barrier outer jacket
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Industrial Hoses5 Products

Industrial Hoses

Heavy-duty industrial hoses and duct hoses for dust collection, fume extraction, material transfer, and high-temperature ventilation. Nylon, canvas, silicone, PU, and PVC options.

  • Temperature range up to +300°C
  • Chemical & abrasion resistant
  • Dust collection & fume extraction
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Duct Accessories4 Products

Duct Accessories

Essential HVAC duct accessories including connectors, aluminum foil tape, flexible connectors, and duct hangers. Everything you need for a complete duct installation.

  • Complete installation kit
  • Compatible with all duct types
  • UL listed accessories
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Ceiling Diffusers16 Products

Ceiling Diffusers

Square, round, and louvered ceiling diffusers in aluminum and steel. 1-way to 4-way airflow patterns with MS or OBD damper options.

  • 1-way to 4-way airflow
  • Aluminum & steel
  • MS or OBD dampers
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Sidewall Supply Registers66 Products

Sidewall Supply Registers

Curved blade, straight blade, and adjustable sidewall supply registers. Steel and aluminum with multi-shutter or opposed blade dampers.

  • 1-way to 4-way patterns
  • Curved & straight blades
  • Multi-shutter dampers
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Return Air Grilles13 Products

Return Air Grilles

Return air grilles including eggcrate, perforated, fixed blade, and 45-degree deflection styles. Hinged access and filter options.

  • Eggcrate & perforated
  • 45° & 90° deflection
  • Hinged filter access
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Filter Grilles17 Products

Filter Grilles

Hinged filter return air grilles with removable filters. Steel and aluminum for residential and commercial HVAC.

  • Hinged filter access
  • Removable filters
  • Multiple face styles
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Floor Registers & Grilles7 Products

Floor Registers & Grilles

Floor-mounted supply and return registers in steel and aluminum. Damper-equipped for residential heating and cooling.

  • Supply & return air
  • Integrated dampers
  • Multiple finishes
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Baseboard & Toe-Kick11 Products

Baseboard & Toe-Kick

Baseboard registers and toe-kick grilles for low-profile air distribution. Kitchen, bathroom, and cabinet installations.

  • Low-profile design
  • Toe-kick compatible
  • Under-cabinet mounting
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Linear, Slot & Spiral Duct5 Products

Linear, Slot & Spiral Duct

Linear slot diffusers, bar grilles, and spiral duct for modern architectural and commercial spaces.

  • 2-slot & 3-slot options
  • Bar grille designs
  • Architectural finish
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T-Bar Products21 Products

T-Bar Products

T-bar compatible ceiling diffusers, return grilles, and accessories for suspended ceiling grid systems (24x24, 24x48).

  • 24×24 & 24×48 grid
  • Drop-in installation
  • Diffusers & grilles
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Accessories & Plenums31 Products

Accessories & Plenums

Plenums, dampers, neck adaptors, boots, duct connectors, and installation accessories for HVAC air distribution.

  • Supply & return plenums
  • Neck adaptors
  • Dampers & boots
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Laser-Cut Decorative Registers7 Products

Laser-Cut Decorative Registers

Premium laser-cut steel floor registers with decorative patterns. Matte Black, Satin Nickel, Antique Brass, and Rose Gold finishes.

  • Laser-cut steel
  • Multiple finishes
  • Decorative patterns
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Plastic Vents & Connectors7 Products

Plastic Vents & Connectors

ABS/PVC plastic vents, exhaust hoods, duct connectors, gravity louvers, and disc valves for residential HVAC.

  • ABS / PVC material
  • Lightweight
  • Corrosion-resistant
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Round Metal Vents & Diffusers7 Products

Round Metal Vents & Diffusers

Stainless steel and galvanized round vents, exhaust hoods, wall caps, and disc valve diffusers.

  • Stainless steel / galvanized
  • Round profile
  • Weather-resistant
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Need a Custom Ducting Solution?

We manufacture custom diameters, lengths, insulation values, and private-label packaging. Share your specs and get a quote within 24 hours.

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