GENERAL CHARACTERISTICS ITEM DESCRIPTION | 21 IN. O/A LG,10 IN. LGOF EA SIDE,4 OPENING LOUVRE TYPE AIR DIFFUSERS 8 IN. LG,6 IN. W,SECURED BY 2 MACH SCREWS EA NO. 10-32-UNF 2A-1/2 LG,1 LEATHER BOOT,4 GSSKET 3/4 IN. BY 3/4 IN. BY @18 IN. LG OF SILICONE RUBBER ARE FASTENED ALONG LG WITH ADHESIVE,4 PHENOLIC BLOCKS 3/4 IN. BY 3/4 IN. BY 2 IN. @LG ARE ON BOTTOM SIDE,ENDS ARE PROVIDED WITH 4 IN. DIA VENT COVER SECURED BY 3 SCREWS CRES NO. 8-32 UNC-3A,0.469 IN. LG,ALSO PROVIDED W 4 ADAPTERS |