Our current special prices for fiber cement wall sleeves you can find here.
The DDL® GmbH
Implementation technology & sealing systems
For over 20 years we have been developing and manufacturing feedthrough technology & sealing systems – wall feedthroughs, pipe feedthroughs and cable feedthroughs – for the construction industry.
Quality products from DDL®
Our compatible system inserts and sealing packings, as well as our products for pipeline construction, meet every requirement – that’s what we stand for.
Documents & Brochures
Find brochures, flyers, assembly instructions, schematic drawings, test documents and tender texts available for download.
News
Turn of the year 2026/27
Business closure from Monday, December 21, 2026, up to and including Friday, January 1, 2027. read more ›
DDL Presents Annular Space Seals at WODKAN in Warsaw
From September 8 to 10, DDL showcased its annular space sealing solutions at the WODKAN trade fair in Warsaw, sharing… read more ›
New Year’s Eve 2025/26
Company will be closed from Thursday, December 18, 2025 to and including Tuesday, January 6, 2026 read more ›