Lenticular Filter Housing, hold up to 4 filters, 12' wide . We have two stems for 2 or 3 filter cartridges. Purchased from GW Kent. Has back wash plates from Scott Labs and fittings. Can do a wide range of filters, including sterile filters. Excellent condition,like new! On wheels. No more messy plate a frame filter. Cabana Winery Lodi. Pictures available on request.