Who We Are
Bernard Dalsin Manufacturing Company (BDM) has been manufacturing venting and chimney accessories since 1944. The company’s niche in the marketplace is the consistent manufacture of top quality products. Quality is the driving force behind every endeavor the company has taken on and is the basis from which the company has been built.
For over 75 years we have designed and manufactured many product lines for the venting and fireplace industry. Some of these products include:
- Pro-Form™ Direct Vent Systems
- “Dalsin Line”® Chimney Liners & Fittings
- CHIM-A-LATOR® Deluxe Top Sealing Dampers
- CHIM-A-LATOR® Chimney Caps
- AIR-A-LATOR® Fresh Air Intake Devices
- Insul Flue® Wall Pass Through Systems
- Appliance Venting Kits and Components
- Proprietary Venting Components for Partner Manufacturers.
Market Channels
BDM markets and sells its products through business-to-business market channels:
- Hearth and Chimney Distributors
- HVAC Distributors
- Dealers
- Building Supply Companies
- OEM
- Specialty Retailers
- HVAC Dealers
- Chimney Sweeps
- Brick Yards/Building Contractors
- Fireplace/Furnace Manufacturers


DOING BUSINESS WITH BDM
For your protection, we recommend that you inspect all items before accepting delivery. If you discover a shortage or damage – please do not refuse the shipment. Note the shortage or damage on the freight bill and notify BDM within 3 days of receiving the shipment. We will assist you with filing a freight claim. Without the discrepancy or damage documentation in writing a freight claim may be denied.
Again, any discrepancies MUST be reported within 3 days of receiving your shipment.