Arlington Industries, Inc. | Stafford Ind. Park Mutton, Pa. 18517 B00-233-4717 570-562-064 ww fittings. com E-MAIL : Manufacturers of Quality Electra Installation Instructions For: HORIZONTAL SPACER PLATE PART NUMBERS: DBHR131 /DBHR141 / DBHRI51 / DBHR1 71 HORIZONTAL SPACER PLATE FOR 1/2" SIDING CAULKING SEALANT TAPE (PROVIDED) 2. Position #8 x 1/4" Long Pan Head Screws (Provided) thru Horizontal Spacer Plate & Secure to Siding (four places as shown) 1. Starting at Bosom Comer, Affix Caulking Sealant 3.