12" Plenum Box for [12" Linear Slot Diffuser - (2 Slot) Double Slot] Premium Ins. 1 / de 1. 24x8 Modern AC Vent Cover - Decorative White Air Vent - Standard Linear Slot Diffuser - Register Grille for Ceiling, Walls & Floors - Texas. As one of the most professional Air conditioner ventilation aluminum Linear Slot Diffuser manufacturers and suppliers in China, we're featured by quality. The plenum box can stick external or internal insulation [HOST]al:Steel [HOST] plenum box can stick external or internal insulation [HOST] The linear diffusers of the LESS series allow the supply and return of air on the same unit, contributing to better architectural aesthetics and easy and. out of 5 stars imagen para Linear Slot Diffuser - Surface Mount 3/4" Border - Model 3/4" SUPPLY LINEAR SLOT DIFFUSER - 1 SLOT - WHITE. V-SLOT ; European production; V groove - Compatible with the Openbuilds system; Perfect for building 3D printers, CNC milling machines and more. Multiple damper. External fiberglass insulation (EI); Internal closed cell foam (CC) insulation Standard lengths available are 24", 36", 48", 60" and 72". . Linear Slot Diffuser - Drop Face - Model Series.