Photo credits: VI46 with narrow glass panels

This heater requires no electricity and is whisper quiet

This easy DIY assembly kit includes all installation hardware

Dutch Door Design: Adds style and functionality with easy access while promoting natural airflow

Janssens | Automatic Opener for Louvered Window Chalet Photo credits: VI46 with narrowThe Janssens Automatic Opener for Louvered Window is an optional addition to your louvered window in your Janssens greenhouse. The black tube is filled with special paraffin oil which expands when the temperature reaches around 72 F and the piston will push the window open. When temperature falls, a heavy spring pulls the window closed. No electricity needed! WARRANTY 15 Year Limited Warranty