Please find below pictures of additional return grilles offered by Plenums if an alternative to matching supply grilles is required including our range of eggcrate grilles with an option for built in filters for ease of maintenance.

Eggcrate grille metal

White metal eggcrate grille available in various sizes for MF (plasterboard) ceilings in commercial or domestic applications or in a 595 x 595 version to replace a 600 x 600 ceiling tile.

Grilles only can be purchased if the ceiling is being used as a return air plenum or if return air plenums and ducting is required either top or side entry lightweight Koolduct grille boxes can be supplied with optional oval side spigots to provide shallow boxes in tight ceiling voids.

Click here for technical information 

Click here for metal eggcrate 595 x 595 tile replace & grille box type confirmation order form

Click here for metal eggcrate 1195 x 595 tile replace & grille box type confirmation order form

Click here for square non tile replace square metal eggcrate & grille box type confirmation order form 

Eggcrate grille ABS with removeable filters

White ABS (plastic) eggcrate grille available in various sizes for MF (plasterboard) ceilings in commercial or domestic applications or in a 595 x 595 version to replace a 600 x 600 ceiling tile.

Grilles only can be purchased if the ceiling is being used as a return air plenum or if return air plenums and ducting is required either top or side entry lightweight Koolduct grille boxes can be supplied with optional oval side spigots to provide shallow boxes in tight ceiling voids.

Removeable filters can save on buying additional filters from the fan coil manufacturer and can make the equipment easier to maintain as access is via the underside of the grille.

Click here for technical information

Click here for ABS eggcrate grilles with filters & grille box confirmation order form

 Lightweight side entry grille box

Right is a lightweight phenolic foam grille box for either type of eggcrate grille and is finished internally in black for asthetic purposes. 

These can be made with oval spigots for shallow versions or top entry boxes, these are approx. 15% the weight of traditional metal boxes with insulation and therefore do not need additional support so saving on labour and materials on installation.