• Two sheet metal construction formed by precision ‘stamping’
  • Providing increased strength
  • Aesthetic appearance
  • User friendly hand knobs to facilitate easy opening and closing without tools
  • Conical spring design which enables two piece door to perform as single unit
  • opening out in the duct wall permits the back plate or ‘inner plate’ to slip easily through                                to form an air tight seal(due to neoprene gasket).
  • Three piece thermally insulated versions available
  • Sizes available are as given below                                                                                                                                    8×8″,10×10″,12×12″,14×14″16×16″,18×18″,20×20″ & 24×24″

Product Specification Sheet