We understand the importance of having your project done correctly, on time, and on budget.

DMVs’ streamlined fabrication process and expertise allows us to provide high quality, low cost, and timely solutions to all of their mechanical sheetmetal requirements and specifications.

We are excited about what we do, and welcome one-on-one engagements with our clientele.That is why why we give our clients personalized attention to make sure it’s done right the first time!

DMV was founded on honesty and hard work. We’ve built our solid reputation on results and back it up with years of skilled experience in the laser cutting and metal fabrication markets. We look forward to working with you in creating your next project!


Products & Manufacturing Capabilities

DMV offers an extensive range of production capabilities to accomplish all your construction requirements.

We also source from many reputable vendors to provide every type of HVAC product required by our customers.


20 years of excellence in the HVAC industry, we tackle any job, big or small.

We employ certified welders for all grease duct & welded jobs.

Quick responses on all emailed & faxed details.


Delivery Services

Expedited Deliveries-

We can accommodate orders of any size.

Same/Next day delivery for stock products.


DMV provides full-service sheet metal fabrication services to Washington DC, Maryland, Virginia, Pennsylvania, and Delaware. Centrally located in Silver Spring, Maryland, we understand that every job is distinct in nature.

Key projects require specialized skills and custom-designed products. Our expertise and state-of-the-art equipment make our laser cutting, metal fabrication, and aluminum fabrication services second to none.

DMV manufactures ductwork and sheet metal products for the heating, ventilation, and the air conditioning industry, as well as industrial dust collection and exhaust systems. Our goal is to provide excellent service and high-quality products to all our customers to enable them to meet their deadlines.

We look forward to getting your job right the first time – with quality, service and on-time delivery.


DMV Sheet Metal offers a verity of Delivery Services with our private fleet of vehicles.

Our goal is anaccurate product, with on-time Delivery!

Products & Manufacturing Capabilities

Fittings & Saddle Taps

  • 3-piece sure-fit reducers 6" body + collars
  • Spiral & square elbows
  • Pancake tapers (cookie cutters)
  • 90 & 45 degree adjustable elbows short & long radius 3" thru 28"
  • T-wyes 45 degree branch F/M/M with beaded ends - hundreds in stock up to 20" diameter
  • Dovetail start collars & end caps up to 28" diameter
  • Ceiling cans with plaster ground
  • Heavy-duty damper sleeves with 1.5" standoff's, 3/8" rod, and nylon bushings
  • Jiffy dampers
  • 45 & 90 degree saddle taps on flat up to 20" diameter
  • 90 degree conical on flat 6" tall + collar
  • 45 degree saddle taps on a variety of round sizes
  • Straight spin-ins 5" thru 20" diameter

Insulations & Sealers

  • FSK duct wrap 1.5" (R4.2), 2" (R6), & 3" (R8)
  • 9" yellow cut wrap unfaced
  • 1" Black Coated Circliner 6' lengths
  • 1" DuctBoard Sheets
  • DP1010, DP1020, Vulkem 801, DP2502 & DP77 Duct Sealer & Adhesives

DMV Sheet Metal maintains and provides a cumulative inventory of galvanized, low pressure fittings.

Fitting types include Wyes, Tapers, Elbows, Start Collars, Dampers and Damper Sections in stock available for will-call or delivery, ranging in size from 4” to 24” round.

Material used to make Round & Rectangular duct and fittings:

  • Galvanized
  • Stainless Steel
  • Aluminum
  • Double Wall
  • Black Iron
  • Paintlock
  • PVS Coated

Spiral Pipe:
DMV supplies Galvanized, Stainless Steel, PVC coated and Perforated spiral pipe. Our shop is capable of running spiral pipe ranging in gauge from 28-18 (SMACNA) and can be ordered in sizes ranging 4″-72″ round.

Spiral pipe is offered at a length of 10′ however, DMV can supply pieces cut to any length in order to meet your needs.

Additional Supplies:
Hanger Strap
Slip and Drive

Joint Connectors Offered: Slip/Coupling
Crimped Spiralmate

Additional Services:
Mig Welding
Tip Welding
Cleaning & Capping


  • DMV’s spiral elbows are fabricated from a continuous strip of galvanized sheet steel, which utilizes the same 4-ply spiral lock seam in a rolling process.
  • This process eliminates the need for welding, sealants, broaching, and VOC paint touchups. DMV’s single form process ensures consistency, quality, and tolerances that are strictly controlled elbow to elbow.
  • The elbows are formed without welding, which reduces the need for metal gauges in the prevention of burn-through.
  • A 26-gauge spiral elbow has 22% less metal than a 24-gauge elbow, and 36% less metal than a 22-gauge elbow. This production process, therefore, substantially reduces the use of raw material and costs and is more ecofriendly.

Facts Regarding 1.0 to 1.5 Centerline Spiral Elbow

  • Spiral elbows produced automatically from coil
  • Production as fast as 18 seconds per piece
  • Very little scrap in production of spiral elbows
  • Straights on the elbow ends of 2” / 50mm or greater
  • Airtight 4-ply lock seam construction
  • 1.0 and 1.5 Centerline radius also available from 4” to 24” diameter
  • 45° and 90° 1.5 Centerline elbows from 4” to 24” diameter
  • Meets SMACNA gauge requirements
  • Low friction loss
  • Meets leakage Class 3 for 10” W.G. Duct construction class in a sample test section. Test data states +/- 20”
  • No gores to seal; saves on labor costs