Monolithic (Smooth) Acrylic

Aluminum Framed Dropout

Natural Series Dropout

Dropouts are essentially gravity operated acrylic double dome single leaf smoke vents with domes which are designed to automatically drop out in the event of a fire which reaches in excess of 500F. In some case, these units are equipped with a fusible link which will cause the domes to drop out when a certain temperature is achieved and can also be used in conjunction with a building's early surpression system.

Product Data Sheet

Acrylic Dropout PDS

SLDOUL Product Data Sheet


CAD Drawings
PDF Drawings

Self Flashing Dropout


Self Flashing Dropout


Who We Are Brochure

Product Information

Technical Information

Frame Material      Aluminum     
Dome Material Acrylic
Width (Opening) Up to 48"
Length (Opening) Up to 96"
Visible Light Transmittance*  
Double Dome - Clear/Clear 92%
Double Dome - Clear/White 53%
Solar Heat Gain Coefficiency*  
Double Dome - Clear/Clear 0.89
Double Dome - Clear/White 0.63
*Values may vary slightly depending on unit size and specifications. 


Testing & Approval

Test Results
NFPA Fire Rating CC2 Rated / Class A Plastic Performance
Underwriters Laboratories (UL) Listed to UL 793 Standard


Kingspan Light + Air daylighting products have been used on every continent in the world bar one under extreme climatic conditions and are manufactured from the highest quality materials, using state of the art production equipment to rigorous quality control standards, ensuring long-term reliability and service life.
  • 10 year standard material workmanship warranty*
​* Contact Kingspan for more information regarding our terms and conditions and optional warranty programs.

Related Products

Kingspan Light + Air

Kingspan Light + Air LLC

28662 North Ballard Drive

Lake Forest



+1 (800) 759 6985

+1 (847) 816 1060

We use cookies on our website To find out more about the cookies we use, or to change your cookie preferences i.e. to remove your consent to our use of certain categories of cookies, please visit our Cookie Policy & Control page.

Please click “Accept and close” to accept the use of cookies on our website. If you do not click “Accept and close” but continue to use this website: you thereby consent to the use of all Kingspan's cookies and third party cookies for the purposes of improving performance, improving functionality and audience measurement, in accordance with the terms laid out in our Cookie Policy & Control page; and we will assume that you have read and understood our Cookie Policy & Control page.

The Cookie Policy & Control and Website Privacy Notice were updated on 13 August 2018.