Site Logo
  • Products
  • Approach
  • Inspiration
Request samples
  • Home
  • Products
  • Inspiration
  • News
  • Approach
  • Careers
  • Asset Library
  • Contact
LinkedInPinterestInstagram

Sign up to our newsletter

Sign up to our newsletter and stay up to date with De Vorm and get frequent updates on product launches, events and more.

LinkedInPinterestInstagram

Products

  • Chairs
  • Couches
  • Lighting
  • Stools
  • Tables
  • Acoustics
  • Side Tables

Information

  • Approach
  • Inspiration
  • News
  • Asset Library
  • Careers
  • Contact

Links

  • FAQ
  • Privacy Policy
  • Warranty Terms
De Vorm

De Vorm BV Dijkgraaf 38, 6921 RL Duiven

© 2026 De Vorm BV

Fost Bulb PET Felt Acoustic Lamp

Fost Bulb PET Felt Acoustic Lamp
  • Back to ProductsFost Bulb PET Felt Acoustic Lamp
  • Introduction
  • Colours
  • Images
  • Projects
  • Specifications
  • Downloads

Introduction

Fost Bulb PET Felt Acoustic Lamp brings acoustic control to meeting and dining tables. Its ribbed PET felt dome dampens sound where people gather while adding a playful sculptural element to interiors. Fits standard bulbs, allowing you to choose your own light source. Available in 11 PET felt blends.

Section Image
Section Image

A lamp that improves both atmosphere and acoustics. Fost Bulb's sound-absorbing dome reduces noise locally above tables. The refined ribbed pattern creates visual interest while adding structural strength to the PET felt shell.

Available in 11 Colours

Eleven unique PET felt blends, each with its own texture and depth. Minor colour variations between batches are a natural result of the recycled content in the material.

Section Image
Dark Grey
Section Image
Light Grey
Section Image
Dark Green
Section Image
Green
Section Image
Olive
Section Image
Yellow
Section Image
Marine
Section Image
Turquoise
Section Image
Brown
Section Image
Beige
Section Image
Pink

Images

Section Image
Section Image

Section Image
Material

Made from recycled PET felt

The lampshade is made from PET felt, produced from recycled plastic bottles. De Vorm's single-mould pressing technique shapes a flat felt sheet into the ribbed dome in one production step. The result is a durable, sound-absorbing shell with distinctive texture. PET felt is both recycled and recyclable.

Learn more about our PET felt technology

Fost Bulb in use

Fost Bulb Acoustic Lamp features in working, meeting, and dining interiors where its playful form and acoustic properties improve both the visual and sound environment.

Pharmaceutical Office

Pharmaceutical Office

Office Sofia, Bulgaria by DA Architects


Specifications

  • Materials
    • Shell
      PET Felt
    • Inner plate
      Powder-coated steel
    • Fixture
      Steel cables + ceiling mount, 3 m
    • Electrical cord
      3-way, 3 m
  • Technical details
    • Weight
      3.1 kg
    • Fitting
      E26/27 (light bulb not included)
    • Installation guide
      Find the installation guidelines here
  • Colours
    • Shell
      Yellow, Pink, Marine, Turquoise, Dark Green, Green, Dark Grey, Olive, Beige, Light Grey, Brown* *Due to the recycled content of the PET felt, minor colour differences may occur.
    • Inner plate
      White (RAL 9010)
    • Electrical cord
      Transparent

Downloads

  • Product documentation
    • Fost Bulb Acoustic Lamp - Installation Guide .pdf Download
    • Fost Bulb PET Felt Acoustic Lamp - Product Setting Images - Hi-res JPG .zip Download
    • Fost Bulb PET Felt Acoustic Lamp - Product Solo Images - Hi-res PNG .zip Download
    • Fost Bulb PET Felt Acoustic Lamp - Productsheet .pdf Download
  • Design files
    • Fost Bulb PET Felt Acoustic Lamp - 3D Files .zip Download
    • Fost Bulb PET Felt Acoustic Lamp - Technical Drawing .pdf Download